- −10% Cavalry cost
- +1 Max promoted culture
- +10% Production efficiency
- −10% Stability cost modifier
- −0.02 Monthly war exhaustion
- +25% National manpower modifier
- +10% Infantry combat ability
- +33% Cavalry combat ability
- +10% Cavalry to infantry ratio
- −10% Regiment cost
- +5% Discipline
- +15% Morale of armies
- +3 Tolerance of heretics
The Polish-Lithuanian Commonwealth (Polish: Rzeczpospolita Obojga Narodów) does not exist at the beginning of the Grand Campaign, only being playable between July 1569 and 23 October 1795. It is a formable country, formable by both Poland and Lithuania.
The Commonwealth was established by the Union of Lublin in July 1569, between the Kingdom of Poland and the Grand Duchy of Lithuania. While Poland and Lithuania were already in personal union since 1386 under the Jagiellonian dynasty, the union created a completely new political entity. Both Poland and Lithuania have the national decision to form the Commonwealth.
The Commonwealth is an elective monarchy led by a king whose power is limited by the Sejm (lower house of the parliament) resulting in unique political problems. Furthermore, the Commonwealth is a multi-cultural and multi-religious state. In the age of religious wars and persecution of minorities, this kind of state is truly unique because it has been created on fundamentals of religious tolerance and personal freedom. Unfortunately high ideals don't always work when faced with the harsh realities of the world, and the ruler of Commonwealth will have to face many internal problems and deal with them quickly. Because if the power and dominance of the Commonwealth start to crumble despotic and totalitarian neighbors will attack without hesitation.
- Main article: Commonwealth missions
- Main article: Polish events
The Commonwealth has a large number of events tying into handling the Sejm (parliament). Most of these are covered under the Polish events page.
The most prevalent of these is a coin flip each time a new ruler is elected which decides whether the Sejm will agree or disagree overall with your ruler's ideas; this will either increase or decrease various things like technology cost and inflation.
If Lithuania forms Commonwealth, it has the decision to move capital to Warsaw. This decision can only be made once - that is, if Poland moves the capital to Warsaw (also raising its development) before forming the Commonwealth, it cannot make the decision a second time.
Move Capital to Warsaw
Form Polish-Lithuanian Commonwealth (Poland)
Form Polish-Lithuanian Commonwealth (Lithuania)
Enforce Polish-Lithuanian Commonwealth
- Lithuania starts with 48 provinces, so this is true unless they have gained 10 more.
- Poland starts with 22 provinces, so this is true unless they have gained 10 more.