国家

This article is about the ingame concept of countries and their associated mechanics. For a list of all countries in the game, see Countries.

File:Nation overview screen.png

The main country/nation interface. Most national values are listed above the top bar.

A state, or a country, is an autonomous political structure comprising a community of people organized under some form of government, and is the main playable focus of Imperator: Rome. A state has a court of characters, including a ruler; typically has control over at least one territory and pop, except for Migrant Hordes; a government form and laws that define many of the most important aspects of the country; a primary culture and state religion that will affect the happiness of its pops; and various accumulated values such as gold, manpower, political influence, and stability that represent the resources available to the country and the current state of its well-being. Countries can interact with each other through diplomacy, trade, and war, and a state may be independent or be a subject of a stronger suzerain. The world is populated by hundreds of countries at the start of the game, from minor tribes and city states to the great empires of the east, many of which will likely soon disappear but some who may rise to form one of the great empires that the era was known for - including, perhaps, the player.

政府

主条目：政府

One of the main defining features of a country is its government type, which can be classified into one of three more general government forms - Republic, Monarchy or Tribal.

Different government types have different modifiers, bonuses, and National Idea slots, and it can be useful to switch to one that better synergizes with the current strategy and playstyle. Changing between government types is generally done by decision and the requirements can generally be seen at any time. These requirements may include a minimum stability level, certain laws (or not having certain laws), a minimum civilization value in the capital territory, a specific technology level, and more, and will almost always cost stability. Certain mission trees, such as the   Carthaginian mission tree Aegis of Africa, may also allow for changing government type even when if the country does not meet the normal requirements.

The government form defines the method of succession, the available laws, and the makeup of the offices, which give political power and various bonuses according to the character's attributes and Loyalty. Each government form also has different mechanics that a player must deal with - republics must seek the approval of the Senate for nearly every major action, monarchies must watch their legitimacy and deal with angry pretenders, and tribes must appease their powerful clan chiefs and decide on the direction of centralization. Government offices also provide political influence depending upon the holder's Loyalty. Changing the government form is usually harder than changing government type; reforming from a Tribal government to a Republic or Monarchy involves going through the Tribal Reform mission tree, changing from a Republic to a Monarchy requires high Tyranny and the declaration of a Dictatorship, and changing from a Monarchy to a Republic is not generally possible outside of a few special events or missions (such as the   Syracusan mission tree Death to Tyrants).

Ruler

主条目：Ruler

Each state is headed by a ruler, prominently visible on the Show Government tab of the government panel, and their traits, attributes, and relationships have a significant effect on character loyalty, Senate support, and state modifiers from national commerce income to army morale recovery to File:Stability monthly change.png monthly stability change. Rulers with high attributes can be a considerable boon to their country, significantly strengthening the state and allowing the nation to punch well above its weight, while corrupt, low attribute rulers can inflict major penalties that a state must struggle through. A ruler may be supported by a co-ruler or consort, who contribute any of their four main attributes if they are higher than those of the ruler, but may also have effects on political influence generation and modifier for ruler popularity and corruption. Succession varies widely depending on the country's government form, ranging between dynastic inheritance in a monarchy, Senatorial election in republics, and rotation between Clan Chiefs in tribes, and the length of office may vary widely as well.

Culture

主条目：Culture#Primary culture

Every country begins the game with a predefined primary culture, which can be seen at the top right corner of the National Overview screen. Outside of a few special events and decisions, such as startup events for  本都的赫拉克利亚 and  埃及, the 请检查模板名和国家代码：{{Countries|flag/core|Parthia (Formable)}} Parthia formation decision, and events during the Yuezhi migrations, the primary culture generally cannot be changed except for during a barbarian takeover.

Pops of the primary culture are typically the happiest and most satisfied pops in the realm, and are fixed to the civic right. Most often the culture of the state population is more diverse, but pop culture can be gradually changed to match that of the state during the playthrough via assimilation, as pops of a different culture and especially culture group have a significant happiness malus that can become very difficult to manage if stability begins to drop. Assimilation is also slowed if the dominant province culture and/or religion is not the same as that of the state, all of which makes the conquest of wrong culture (especially wrong culture group) and wrong religion areas significantly more difficult, especially in the early game. Outside of events pops will always assimilate and convert to the primary culture. As an alternative to assimilation, cultures can be integrated to be given the same rights as the primary culture, at the expense of the happiness of already integrated cultures.

The primary culture also has an effect on diplomacy. States of a different culture (in the same culture group) get a -10 opinion malus, while those in a different culture group get a -20 opinion malus. The subject types available also depend on primary culture; another state can only be made a feudatory if it is in the same culture group as its new overlord, and satrapies can only be made of states with Persian military traditions, which consist mostly of countries in the Iranian, Caucasian, Anatolian, Scythian, Bactrian, and Aramaic culture groups.

The state's Military Tradition tree, which determines the unit abilities and bonuses that can be accrued over the game by spending military experience, is fixed at the start of the game based on the primary culture/culture group (with a few exceptions) and cannot be changed except for through a few special events (such as the  本都的赫拉克利亚 startup event).

Each nation also has a set heritage, offering two bonuses and one malus. This cannot be changed, even when forming a new nation, and its modifiers stay with you for the whole game.

Religion

主条目：Religion#State religion

Every country starts with a predefined state religion, which can be viewed just above the pantheon deities in the File:Menu religion.png Religion tab. Every religion has bonuses that are applied to the entire country, and also determines the base deities that are always available regardless of the population or holy sites of the country. State religion also has a small effect on diplomacy—countries of the same religion get a +10 opinion bonus with each other. There is no malus for having a different state religion.

There is no default happiness bonus or penalty for pop religion, but pops will receive a +4% happiness bonus for each deity in the state pantheon that matches their religion, making it useful for polytheistic states to take on pantheon gods of religions that are widespread inside their country - though spreading out the deity happiness bonus between deities of different religions means a smaller happiness modifier for each individual religion. The happiness of state religion pops specifically is also be increased with the state religion happiness modifier, which is given by various omens and deities, inventions, laws, heritages, and more.

Additionally, the percentage of pops following the state religion determines the nation's Religious Unity value, which is the main component of omen power.

State Conversion

主条目：Decisions#Religious Conversion decisions

The state religion can be changed by decision if there is at least 1 character of the new religion in the country, and either 50% of the non-slave pops in the capital, or at least 20% of all the pops of the country and at least one pantheon deity, follow the new religion the country intends to convert to. Switching religions can only be done once every 10 years and costs 200 political influence and 30 stability, also giving a temporary drop of −15 Loyalty for all characters that are followers of the old faith.

Accumulated points

Wealth

主条目：Economy

The nation's Treasury stores all of its currently accumulated wealth. The nation's income is calculated monthly and comes from tax collection, domestic commerce, trade route income, and subject tributes. Many events can also give gold into the treasury, often scaled by the nation's current income.

Monthly expenses include army and fleet maintenance, tributes to an overlord, fort maintenance and character wages. Wealth is also spent on building costs, founding of cities/metropolises, invention acquisition, some character interactions, slave resettlement between territories, and many more. If a state runs into deficit, a random event may grant some gold in exchange for a temporary drawback.

Manpower

Manpower represents a pool of ready-to-fight people who are drawn from citizen, freeman, and tribesman pops inhabiting a state. Manpower is used when recruiting new army cohorts and replenishing attrition or combat losses; if manpower becomes low, a nation can become very vulnerable to attack. Each point of manpower provides one soldier for a newly recruited or reinforcing cohort; if a country runs out of manpower, they will no longer be able to recruit any more cohorts or reinforce their armies until it replenishes.

Every country has a base manpower pool of 5000, which is then increased by the output of the citizen, freeman, and tribesman pops in the country. Each citizen produces a base of +2 manpower and freemen and tribesmen a base of +3 manpower per pop per year at 100% happiness. The amount of manpower that pops produce is increased country-wide by the File:Global manpower modifier.png global manpower and locally by the File:Global manpower modifier.png local manpower modifiers, which is given by several trade goods bonuses (e.g. wood) and Barracks/ Training Camp buildings. Like all other pop outputs, citizen, freeman, and tribesman happiness and output modifiers will also increase the manpower that they produce. The increase to the total manpower pool is then 20 times the sum of local manpower production across all territories. Note that all these modifiers, including File:Global manpower modifier.png global manpower, are only be applied to the part of a country's manpower which is produced from its pops, not the 5000 manpower base for each country, which is a significant difference for less populous countries.

If the current manpower pool is below the cap, it will recover by a base of 1/240th each month, so that refilling the pool takes 20 years. The part of the manpower recovery that comes from pops is modified by the manpower recovery speed modifier, and the amount produced per month (i.e. 1/12th of the local manpower generation, adjusted by manpower recovery speed) is the amount listed on the territory interface. Manpower recovery is also increased as the tribute of certain subject types, such as feudatories and tribal vassals.

Political Influence

主条目：Political influence

Political Influence represents the state's political capital and is used to perform actions directly relating to the government, such as selecting national ideas or implementing laws.

It is an abstract currency generated by loyal members of your government over time, who are chosen as office holders. The total value accrued each month is determined by each character's Loyalty, therefore, it may fluctuate consistently over the year. Each government office provides up to +0.25 per month, scaling by the holder's loyalty up to 100.

Military Experience

Military Experience is a countrywide value that measures the degree of Military Experience the state has built up. This currency is primarily used to embrace military traditions.

Military Experience increases by a base of +0.30 per month, plus an additional +0.007 for every point of average cohort experience across all armies (for a maximum of +0.70). Various other modifiers such as (unrecognized string “monthly war exhuastion” for Template:Icon) war exhaustion, being in a defensive war, and certain deities, religions, and laws give an additional positive modifier to military experience gain, while mercenary reliance reduces the rate at which military experience is generated. Other than training up cohorts by fighting battles in war, a country can also use the Drill Army unit ability during peacetime to build up cohort experience in exchange for increased maintenance cost and loyalty gain chance. There are also a number of events and mission tasks that give military experience, as well as the apotheosis effect of certain deities when replaced with a deified ruler.

Every point of military experience stored gives a +0.05% army morale bonus to the country's cohorts, with a maximum bonus of +10% when the stored military experience reaches its cap at 200 points. The bonus is reduced once the military experience is used on military traditions, mission requirements or in events.

Research

主条目：Technology#Research_Points

Research Points represent the progression of techniques, discoveries, and general technology over the course of time. They are produced by nobles and citizens inhabiting a state, and the yearly research output as a proportion of the number of integrated culture pops in the country determines the rate of progress in technological advances. It is generally recommended that at least 1/3 of a state's integrated culture population is made up of nobles and citizens in order to achieve at least 100% research efficiency, but how much is actually needed will vary widely depend on the proportion of nobles to citizens, as nobles produce much more research per pop, as well as the amount of research produced by unintegrated cultures (who do not count against the denominator of research efficiency). Research point production can be increased directly many modifiers, such as the academy city building and trade goods bonuses (cloth, earthenware, glass and papyrus), and is also sensitive to noble and citizen happiness and output modifiers. Research point production can be tracked on the technology panel.

Research points are automatically spent towards advancing the four fields of technology: martial, civil, oratory and religious, modified by researcher skill. Each new advance in a field grants a small bonus for each level and unlocks at least three new inventions that give a wide variety of other useful modifiers, which can then be adopted using gold.

Stability

Stability represents the trust that the characters and population of your country has in your government, and its general ability to withstand threats and discontent from within. Stability runs from 0 to 100, with a base value of 50 that the stability value will naturally decay to. Positive (above 50) has many economic benefits, increasing population growth, population happiness, research points, and legitimacy. Negative stability (below 50) will instead decrease population happiness and legitimacy (in monarchies), making it more likely that a revolt will break out if stability is not quickly raised.

Stability is decreased by certain diplomatic or political actions, such as breaking truces, changing laws or government form, or swapping pantheon deities. It is also spent by migratory tribes to start migrations. The primary method of increasing stability is to spending to make Divine Sacrifices in the Religion view, which will increase the monthly stability change. Certain omens, traits, and laws also increase monthly stability change, and many Queued Events also offer semi-reliable immediate stability boosts, usually at the cost of spending or forgoing a bonus in some other currency (especially wealth and political power). High aggressive expansion, low senate approval (in republics), being in deficit, and integrating cultures are some of the main factors that will decrease stability over time, and should be watched carefully.

Your nation is considered disorganized if stability is below 30, which will prevent you from assigning characters to offices or declaring wars.

Generally speaking higher stability is always better, though because decay increases as stability gets further away from 50, it is usually not worth it to intentionally try to keep stability very high. Low stability should always be a cause for concern unless your nation is very well managed, as prolonged instability will lead to widespread unhappiness and , and possibly eventually rebellions.

Every point of stability above 50 has the following effects:

• +0.01% National Population Growth
• +0.2% Population Happiness
• +0.003 Monthly Legitimacy
• +0.5% Research Points

Every point of stability below 50 has the following effects:

• -1% Population Happiness
• -0.01 Monthly Legitimacy
• -0.01% Monthly Stability Decay

Note that since stability decays towards 50, the stability decay reduction from low stability means that the base change of stability up towards 50 is more slow than the decay down towards 50 from high stability.

Aggressive Expansion

Aggressive Expansion (AE) represents the resentment that other states and pops in your empire have against conquests and other aggressive actions you take. The primary effect of Aggressive Expansion is to decrease realm stability and lower the loyalty of all subject states, which can have a significant impact on population happiness and unrest at higher levels and raise the risk of rebellions if not handled properly. Higher Aggressive Expansion also significantly decreases the opinion of nearby states (though allies have a much reduced opinion malus) and makes it more likely that the nation is viewed as a threat, making it more difficult to conduct diplomacy and encouraging other states to form alliances or defensive leagues against the expanding country. Very high Aggressive Expansion will have additional effects on integrated culture pops as well as reducing political influence generation. Aggressive Expansion has a base value of 0, where it has no effects, and can become arbitrarily high, but cannot become negative.

Each point of Aggressive Expansion has the following modifiers:

• -0.02 Claim Fabrication Speed
• -0.25 Loyalty of Subject States
• -0.0075 Monthly Stability Change

Each point of Aggressive Expansion beyond 50 also has the following effects, in addition to the ones above:

• -0.10% Monthly Political Influence
• -0.30% Integrated Culture Happiness
• -2% Aggressive Expansion Impact

Aggressive Expansion is primarily accrued through conquering new territories or forcing vassalization during a war. Several diplomatic actions, character interactions, and unit abilities also increase Aggressive Expansion.

gain	Type
+25	Breaking a Truce
+20	Entice Governor Character Interaction
+15	Plan Assassination! Character Interaction (foreign)
+10	Recruit General Character Interaction
+7	Plan Assassination! Character Interaction (domestic)
+5	Declaring a War with No Casus Belli Breaking a Truce by attacking Guaranteed Inspire Disloyalty Character Interaction
+2	Support Rebels Diplomatic Action Desecrate Holy Site Unit Ability Raze City Unit Ability Recruit Character Interaction
+1	File:Cede state.png per Territory annexed in War, adjusted by Aggressive Expansion Impact Removing a treasure from an owned Holy Site Insult Diplomatic Action
+0.5	per Territory vassalized in War, adjusted by Aggressive Expansion Impact File:Cede state.png per Territory annexed by subject in War, adjusted by Aggressive Expansion Impact of the subject

The base Aggressive Expansion Decay is -0.20% of current Aggressive Expansion per month, which is be increased by another -0.20% with the Appeasing Diplomatic Stance, +0.03% from every point of positive diplomatic reputation, and another -0.20% if the ruler has the Righteous trait; however, this decay is active only if your country is not currently on the side of the aggressor in a war. There are also several sources of flat monthly Aggressive Expansion Change that is active at all times, including Oratory inventions, government offices, and various deities. All static sources of monthly Aggressive Expansion Change are listed below:

	Type
+0.020	Supporting Rebellions Abroad (Diplomatic Action)
-0.004	per point of tyranny
-0.010	Blood of Antigonos (Ruler Trait)
-0.015	per Statesmanship-adjusted Charisma of Arbitrator (Tribal Office)
-0.020	Equal Integration (Oratory Tech 1) Mandate Local Governance (Oratory Tech 7) Gradual Economic Integration (Oratory Tech 10) Oaths of Fealty (Oratory Tech 15) Diplomatic Apologetics (Oratory Tech 19)
-0.025	per Statesmanship-adjusted Charisma of Chancellor (Monarchy Office) per Statesmanship-adjusted Charisma of Magistrate (Republic Office) Ailiah (Arabic deity) Spirits of Inspiration (Bon deity) Ba'al Qarnaim (  Carthaginian Canaanite deity) Ogmios (Druidic deity) Thagimasadas (Heptadic deity) Shiva (Hindu deity) Samuel (Jewish deity) Khaldi (Khaldic deity) Zibelthiurdos (Zalmoxian deity)
-0.03125	Above deities if holy site is owned
-0.050	per 100% omen power for Ghmerti Omen (Khaldic deity) per 100% omen power for Metta Parami Omen (Buddhist deity) per 100% omen power for Enlil Omen (Chaldean deity) per 100% omen power for Cichol Omen (Druidic deity) per 100% omen power for Zeus Omen (Hellenic deity) per 100% omen power for Jupiter Omen (Italic Hellenic deity) per 100% omen power for Ahimsa Omen (Jain deity) per 100% omen power for Mother Goddess Omen (Matrist deity)
-0.0625	per 100% omen power for above omens if holy site is owned

Aggressive Expansion Impact modifies how much aggressive expansion is accrued from conquering land and vassalizing other states after a war, primarily decreasing the AE cost of conquest. Sources of Aggressive Expansion Impact include Oratory inventions, Laws, ruler traits, heritages, mission/event modifiers, and high aggressive expansion; the last in particular means that at some point above 50 you will accrue very little additional Aggressive Expansion for any further conquests, effectively providing a soft cap to the modifier. The effects of Aggressive Expansion Impact are capped at -95.00%, corresponding to an absolute minimum of +0.05 aggressive expansion per territory annexed or vassalized. Static sources of Aggressive Expansion Impact are listed below:

	Type
+15.00%	Heritage of Chandragupta (Maurya)
+10.00%	Reckless (Ruler Trait)
-2.00%	per point of Aggressive Expansion above 50
-5.00%	Fetiales (Oratory Tech 1) Rerum Repetitio (Oratory Tech 4) Defending Liberty (Oratory Tech 7) Military Ambassadors (Oratory Tech 10) Divine Mandate (Oratory Tech 13) Ba'al (Canaanite deity) Laran (Etruscan Hellenic deity) Amun (Kemetic deity) Nane (Armenian Khaldic deity)
-6.25%	Above deities if holy site is owned
-10.00%	Bellicose Stance Interference Policy (Republic Law) Cassian Reform (Roman Republic Law) Blood of the Argeads (Ruler Trait)
-20.00%	Divinity Statute (Monarchy Law)
-50.00%	Has claim on territory (note: applies when vassalizing as well)

The impact of Aggressive Expansion is felt most in the early game, when diplomacy is most important and the lack of Aggression Expansion Impact means that taking even a few provinces can rack up a significant amount of Aggressive Expansion. Spending political power on Divine Sacrifices as well as assigning governor armies to suppress unrest and handle province loyalty, particularly in already less happy unintegrated culture group provinces, may be necessary to deal with and counteract the loss of stability, while judicious use of Improving Relations can help prevent the diplomatic situation from getting out of hand. An expansionist empire should focus on sources of Aggressive Expansion Change and Impact, while general happiness and stability modifiers - as well as focusing on stability when taking events from the Event queue - will help deal with the stability loss from aggressive expansion. In the later game, when the player has built up a large empire that can easily stand against its neighbours, accumulated many of the AE Change and Impact modifiers, and either accrued enough happiness modifiers or have sufficient garrison army capacity to handle the loss of stability even at relatively high AE values, an empire can take advantage of the Aggressive Expansion Impact for having higher than 50 AE to be able to conquer large amounts of territory at little to no additional aggressive expansion penalty, at which point the main hindrance will be keeping stability above 30 in order to be able to declare wars.

Tyranny

Tyranny represents the level of oppression in your country and produces resentment against the government by characters and primary culture pops, but also increases the willingness of pops and factions to accede to the government's demands and centralization of power. The level of Tyranny must be carefully managed, particularly in the early game, in order to avoid large reductions in character loyalty that can ensue in civil war, but in the later game when inventions and growth in power make characters and pops easier to deal with the aggressive expansion change and national slave output can become quite useful. The base Tyranny values range from the base value of 0, where it has no effects, to 100, and cannot be negative.

Each point of Tyranny gives the following modifiers:

• -0.004 Aggressive Expansion Change
• +0.20% Cohort Loyalty Gain Chance
• -0.10% Threshold for Civil War
• -0.15 Loyalty of Characters
• +0.50% National Slave Output
• -1.00% Imprison Cost
• -1.00% Execute Cost

Tyranny is primarily increased by various character actions, such as imprisoning, executing, and imposing sanctions on various characters, as well as overriding the will of the Senate in Republics when doing character interactions, changing laws, or conducting diplomacy. There are also many events, particularly those relating to characters and their interactions, that can raise or lower the country's tyranny level. The actions and interactions that cost or change the national Tyranny value are listed below by their base cost, which can be changed by various interaction-specific modifiers:

Tyranny gain	Type
+30	Proscribe Character Interaction
+10	Appoint Dictator Character Interaction Revoke City Status Territory Interaction (on a Metropolis)
+7	Plan Assassination! Character Interaction (domestic)
+5	Force Conversion Character Interaction Bring to Trial Character Interaction Manipulate Candidates (Government Interaction) Skew the Assemblies (Government Interaction) Revoke City Status Territory Interaction (on a City)
+4	Arrange Gladiatorial Debut Character Interaction
+3	Imprison Character Interaction (plus an additional +1 per 2 power base) Execute Character Interaction Flog Character Interaction if target has less than 10 Health Invoke Devotio
+2	Smear Reputation Character Interaction Demand Support for Heir Character Interaction Raise Levies Unit Ability Re-election of Faction
+1	Banish Character Interaction per 10 Corruption with Impose Corruption Sanctions Character Interaction per 2 Power Base with Ostracize Character Interaction Construct Border Fort Unit Ability if commander is non-republican Ruler Military Colonies Unit Ability if commander is non-republican Ruler
+0.66	per Senate approval below 60 when Forcing an Action through the Senate
+0.5	Sell into Slavery Character Interaction
+0.01	per (125 - ruler popularity) when changing Governor Policy
-1	Release Prisoner Character Interaction if prisoner was imprisoned through the Imprison Character Interaction
-5	Return Dictatorship Character Interaction

Tyranny is primarily lost through Monthly Tyranny change, which has a base reduction of -0.2 Tyranny per month. This can be increased and changed by many different modifiers, such as certain Oratory inventions, various deity and omen bonuses, ruler attributes and traits, and more, static sources of which are listed below:

	Type
+0.04	Dictatorship Government Form
+0.025	per instance of Strengthening Legitimacy
+0.02	Cruel (Ruler Trait)
+0.01	per Deified Ruler in Pantheon
-0.003	per Senate approval above 50
-0.01	per 10 Ruler Popularity above 50 per Ruler Charisma Official Orators (Oratory Tech 1) Hierarchy of Responsibility (Oratory Tech 5) Seeded Acclamation (Oratory Tech 9) Adventus (Oratory Tech 14) Chironomia (Oratory Tech 19)
-0.015	Marble Capital Surplus Bonus
-0.02	Base value   Athenian Heritage Assembly of Citizens (Republic Law) Curiate Assembly (Roman Republic Law)
-0.025	Men (Cybelene deity) Vishwanath (Hindu deity) Betatun (Iberic deity)
-0.03125	Above deities if holy site is owned
-0.04	Divine Mandate National Idea per 100% omen power for Kopala Omen (Armazic deity) per 100% omen power for Spirits of Inspiration Omen (Bon deity) per 100% omen power for Ba'al Qarnaim Omen (  Carthaginian Canaanite deity) per 100% omen power for Lenus Omen (Treverian Druidic deity) per 100% omen power for Diktean Zeus Omen (Cretan Hellenic deity) per 100% omen power for Nortia Omen (Etruscan Hellenic deity) per 100% omen power for Wisdom of Bhadrabahu Omen (Jain deity) per 100% omen power for Caleb and Joshua Omen (Jewish deity) per 100% omen power for Tir Omen (Armenian Khaldic deity) per 100% omen power for Deivas Omen (Matrist deity) per 100% omen power for Derzelas Omen (Zalmoxian deity)
-0.05	Aristocratic Monarchy Government Form Bonus Merciful (Ruler Trait) Forgiving (Ruler Trait) Trusting (Ruler Trait) Council Legal Authority (Tribal Law) per 100% omen power for above deities if holy site is owned

While nominally a negative modifier, tyranny is generally not particularly problematic at lower levels and it is not very important to keep it low unless the nation is already experiencing issues with character loyalty. It is worth noting that since Tyranny decay does not scale according to its current value and there are no easy ways to quickly lower it, high Tyranny can be problematic if the state is not prepared, especially if the ruler has low Charisma and so the state has low base tyranny decay - if this becomes the case, the loyalty of powerful characters needs to be assured at all costs, or the country could easily spiral into civil war. The significant character loyalty and civil war threshold maluses together can be dangerous if not kept under control by other means, as even a single disloyal family head might be enough to trigger a civil war.

In the later game, when the player has accumulated enough loyalty bonuses to handle the penalties, high Tyranny is much more useful and players can take full advantage of its bonuses, particularly its effects on aggressive expansion change. In conjunction with further reductions from other sources and growing Aggressive Expansion Impact bonuses, a country with high Tyranny can handle much larger conquests and aggressive expansion values in the lategame as opposed to what is feasible early on. The National Slave Output can also be quite useful once all the loyalty problems can be properly dealt with, making for a powerful tyrannical empire.

War Exhaustion

War exhaustion represents anger and discontent in the general population from casualties, blockades, and enemy occupation during a war. The effects of war exhaustion can be quite severe, significantly decreasing happiness of all pops and impacting ruler popularity, but also increasing Military Experience gain. High War Exhaustion will increase the AI's willingness to sign a more favourable peace, and conversely may force a player to sign a less favourable peace treaty rather than let their nation be consumed by unrest. War Exhaustion ticks down slowly based on the ruler's current zeal, which can be increased through various omens, laws, and ideas. If War Exhaustion becomes too high, the Invoke Devotio action in the religion panel can be taken to increase War Exhaustion decay at the cost of Tyranny. War exhaustion generally has a value between 0 and 20, but can rise to 30 for the attacker in an offensive war.

Each point of war exhaustion has the following effects:

• -1.5% Population Happiness
• -0.01 Monthly Ruler Popularity Gain
• +5% Monthly Military Experience

State rank

A country's rank is a measure of how large and influential a particular state is, based on the number of territories that it owns. Country rank is one of the primary determinants of the number of major families/clan chiefs, diplomatic range, and integration speed as well as significantly impacting political influence generation, integrated culture happiness, and warscore cost but higher ranked nations are also more vulnerable to civil war as they have lower office loyalty as well as a province loyalty malus and a lower civil war threshold.

Rank	Number of Territories								No. of families						Other modifiers
Migrant Horde	0	-	-	-	-	-	-	-	3	3	-	-	-	-	+1000 Manpower -25% Army Weight Modifier
City State	1	-	+0.05	+1	-	-	-	-	3	3	-	-	-	-	+20% Fort Defense +20% National Commerce Income
Local Power	2-24	-	+0.10	+2	-	+4%	+10%	-	3	3	-	-	-	-	None
Regional Power	25-99	+1	+0.15	+3	+25%	+8%	+50%	-5%	4	4	-3%	-0.01	-	-	None
Major Power	100-499	+2	+0.20	+4	+50%	+12%	+125%	-10%	4	5	-5%	-0.02	-2.5	-10%	None
Great Power	500+	+2	+0.25	+5	+75%	+16%	+225%	-15%	5	5	-8%	-0.03	-5	-30%	None

Country rank is also particularly important for diplomacy, as certain diplomatic actions are available only to countries of a certain rank.

Rank	Defensive League	Alliance	Guarantee	Threaten War	Support Rebels	Enforce Peace	Intervene in War
Migrant Horde
City State
Local Power
Regional Power
Major Power
Great Power

Maximum civilization value

主条目：Civilization value

Every country has a base country civilization level, visible on the Overview panel, that determines the baseline maximum possible civilization level of every territory that the country owns. This value can be increased by a number of different modifiers, such as country's government type, positive centralization for tribes (up to +10% at 100), Oratory Advances (+2% per level), the national idea State Religion (+5%), the gemstones and glass capital surplus bonuses (+5% each), and various other modifiers. Note that the country civilization level is only the baseline maximum civilization; individual province and territory modifiers such as urban development, special modifiers, and capital bonuses awarded when creating a formable nation can push the maximum civilization value of any individual territory even higher.

参考资料

机制