The population in the game is divided into population units, or “pop” for short, and they are placed in each city. In general the more pops there are in a city the more valuable it is. Each pop has its own religion, culture, social class and happiness.
Types of Population
There are four different types of pops in the game.
- Citizens - They provide research and commerce income. These represent the patricians in Rome, and nobility in monarchies.
- Freemen - They provide manpower. The plebeians of Rome is included in this group.
- Tribesmen - These provide a tiny amount of manpower and tax income. These are the barbarians or uncivilized parts of your areas.
- Slaves - These provide tax income and produce surplus goods
Citizens
Citizens represent the top of society. They are just below the major nobility in wealth and status. They have the kind of wealth to be free from the mundane concerns of life. Taxation is not a problem because they own lots of slaves who do that bit for them. In fact they devote themselves to higher problems and generate research for the nation.
Their characteristics are:
- Base Happiness: 20%
- Cannot be promoted
- Demotes to: Freemen
- 50% chance to be demoted on conquest
Each Citizen Pop produces:
- 0.25 Research Point
- 0.01 Commerce Value
Freemen
Freemen represent the small holders and small artisans.
Their characteristics are:
- Base Happiness: 25%
- Promotes to: Citizen
- Demotes to: Slaves
- 50% chance to be demoted on conquest
Each Freeman Pop produces:
- 10 Manpower
Slaves
Slaves are lowest rung of the ladder. Without rights and privileges they are in some way just a bunch of useless mouths to feed. However they work for the citizens and their labour pays their taxes. The more slaves in the province the more possibilities for taxation.
Their characteristics are:
- Base Happiness: 100%
- Promotes to: Freemen
- Demotes to: Slaves (so no effect)
- Cannot be demoted on conquest
- Cannot be used to colonize
Each Slaves Pop produces:
- 0.03 Base Tax
Tribesmen
Their characteristics are:
- Base Happiness: 100%
- Promotes to: Freemen
- Demotes to: Tribesmen (so no effect)
- Cannot be demoted on conquest
Each Tribesmen Pop produces:
- 0.015 Base Tax
- 5 Manpower
Happiness of pops
While there are ways to increase happiness of pops, including ideas, inventions and access to trade-goods, they tend to be less happy if they are not of the same culture-group, or if they belong to a different religion. Converting pops to the state religion thus increases their happiness.
Happiness impacts two things on the pop, first of all, a pops happiness directly affects how productive they are. Secondly, low happiness increases unrest in a city, and if pops are unhappy over a long time period it can create a rebellion.
Obtaining and Promoting pops
There is always a single pop either in growth or decline, depending on the population growth of the city.
When this pop is fully grown or totally dead, either a current pop is picked for death, or a new random pop is created that will slowly grow. Factors such as Terrain, Civilization value, amount of pops in the city and access to trade-goods impact the growth in a city.
You can also gain pops through warfare. As you sack cities you will take some of their pops back to your main capital, and your provincial capitals as slaves. Upon conquest, citizen pops in that city will become freemen, and freemen will become slaves.
Promoting a slave or tribesmen to freemen costs 10 oratory power, promoting a freemen to citizen costs 10 oratory power.
Pop Movement
Pops can move between cities as a result of scripted content such as events and when a city falls and some of its population is enslaved.
If you want a certain pop to be transferred to a specific place within your empire you will need to move it yourself.
A pop can be moved from one city to either an adjacent city, one adjacent across a seazone, or any other owned city in the same province for a power cost of 20 Civic Power.
Slaves are cheaper than other pops to move, and only cost 5 Civic Power to transfer. Since the number of slaves in a city also decides if it can produce more than one surplus of its Trade Good this means that you can more easily set up production centers for certain goods, whereas you will have to pay more power if you want to build a Metropolis in a way away.
Colonizing
If you have at least 10 pops in a city adjacent to a city, which in uncolonized and the majority in that city is your state culture and religion, you can move one pop to the uncolonized province to colonize it.
Civilization Value
Civilization Value is a rating that exists in all locations on the map, and it represents the level of infrastructure and urbanisation in that location. This is a big factor for pop happiness. Tribesmen will be happier in cities with low Civilization value whereas more stratified pop types such as Freemen and especially Citizens prefer locations with high Civilization value.
The Civilization Value grows naturally over time more or less quickly depending on your laws, invention and traits. It is limited, however, by a cap dependant on several factors. Your country also has a national Civilization Value of its own (mainly increased by government type and technology) - all owned cities will slowly gravitate towards this value if they are below it, and slightly more quickly towards it if they are above it. Positive civilization growth can also never push the local value above that of your capital.
A city's Civilization Value scales between 0 and 100, with the following local effects:
- Citizen Happiness: +1%
- Freemen Happiness: +0.7%
- Tribesmen Happiness: -0.5%
- Barbarian Growth: -0.005
- Population Growth: +0.5%
- Supply Limit: +0.02
| Civilization Value | Citizen Happiness | Freemen Happiness | Tribesmen Happiness | Barbarian Growth | Population Growth | Supply Limit |
|---|---|---|---|---|---|---|
| 0 | ||||||
| +50 | +50% | +35% | -25% | -0.25 | +25% | +10 |
| +100 | +100% | +70% | -50% | -0.5 | +50% | +20 |
The Civilization Value grows naturally over time more or less quickly depending on your laws and inventions, among others. It is limited, however, by a cap dependent on several factors. Civilization will not grow past this threshold, and if the limit falls below the current Civilization Value, it will decrease monthly at a fixed rate of -1% until it meets the cap again.
| Source | Civilization Cap | Maximum Increase | Scope |
|---|---|---|---|
| Base | +10% | Country | |
| Settled Tribe Gov Bonus | +10% | Country | |
| Federated Tribe | +15% | Country | |
| Monarchy or Republic | +30% | Country | |
| Centralization Level | +0.1% per Point | +10% at 100% | Country |
| Oratory Advance | +2% per Advance Level | +40% at Level 20 | Country |
| State Religion National Idea | +10% | Country | |
| Gemstones Surplus in Capital | +5% per Surplus | Country | |
| Gemstones Export Bonus | +2.5% | Country | |
| Markeplace | +1% per Level | City | |
| Emergent Center of Civilization | +5% | City | |
| Center of Civilization | +10% | City | |
| Emergent Capital | +10% | City |
- It is important to note that Settle Tribe Government Bonus is exclusive with the State Religion National Idea due to the lack of Religious National Idea Slot in this Government.
- Government bonuses are, of course, exclusive to each other.
- The Centers of Civilization and Emergent Capital modifiers are obtained in the Capital City by forming regional tags (ex: Saxonia, Gaul, Albion...)
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