For merchant republics, the Trade Practices level and thus the number of trade posts each family can build.Retinue size from Military Organization technology.The cultural bonuses that are applied to the whole realm (relations, legalism.It is also key for many aspects of technology: The cultural building at the capital castle determines the bonuses which the ruler's retinues receive.Which mercenaries and holy orders are close enough to be hired (based on their respective headquarters).Which county does NOT suffer from 'oversize demesne' penalties to troops.(+25% for independent dukes and above, +15% for vassal dukes and kings only applies to directly held holdings) Which other demesne counties/holdings get the 'capital duchy' bonus to troops.(+50% for independent rulers, +25% for vassal dukes and kings only applies to directly held holdings) Which county/holdings gets the 'capital county' bonus to troops.The de jure structure taken into account to calculate vassal levy modifiers.

It affects your army size and effectiveness in several ways:

Determines the effect of two conversion decisions: 'Convert to local culture' and 'Convert to local religion'.

Vassals far from your capital are more likely to seek independence (and vassals bordering the capital duchy cannot create an independence faction).

If occupied during wars, it is worth more warscore than other provinces.

Where the court is located and therefore distance, and is also important when an epidemic disease sweeps through the land or the realm is under siege.

Patricians with no higher-tier titles share their capitals with the capital of their merchant republic.

4.1 Changing a county's capital holdingĪ ruler's capital is the demesne county where their court is located.

Ck2 agot improve castle