From Europa Universalis 4 Wiki
Jump to navigation Jump to search
Kingdom rankCommonwealth
Primary culture
Polish (West Slavic)

Capital province
Krakow (262)

Elective Monarchy Government monarchy.png

State religion

Technology group
EasternEastern technology group
Polish ideas
Traditions.png Traditions:
−10% Cavalry cost
+1 Max promoted culture

Production efficiency.png Promote the Folwark System

+10% Production efficiency

Stability cost modifier.png Nihil Novi

−10% Stability cost modifier
−0.02 Monthly war exhaustion

National manpower modifier.png Piechota Wybraniecka

+25% National manpower modifier
+10% Infantry combat ability

Cavalry combat ability.png Winged Hussars

+33% Cavalry combat ability
+10% Cavalry to infantry ratio

Regiment cost.png Wojsko Komputowe

−10% Regiment cost

Discipline.png Found the Foreign Section

+5% Discipline

Morale of armies.png Focus on Field Defense

+15% Morale of armies

Idea bonus.png Ambition:

+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 Flag of Poland Poland and the Grand Duchy of Flag of Lithuania 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

Most of the Commonwealth missions are shared with Poland and have similar aims including the subjugation and conquest of neighboring rivals: the Flag of Teutonic Order Teutonic Order, the Flag of Ottomans Ottomans and Flag of Russia Russia.


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 Flag of Lithuania Lithuania forms Flag of Commonwealth 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.

Execute decision.pngMove Capital to Warsaw

With the incorporation of the duchy of Mazovia Warsaw has become the seat of the Sejm. Perhaps it would be wise to move the seat of royal government there so we can work better with the nobility?

Potential requirements Allow

  • Gain Yearly prestige.png 20 Prestige.
  • Warszawa (257):
    • Becomes the capital.
    • Gains Base tax.png 1 Base tax.
    • Gains Production.png 1 Base production.
    • Gains Local manpower modifier.png 1 Base manpower.



Execute decision.pngForm Polish-Lithuanian Commonwealth (Poland)

Replace the personal union between Poland and Lithuania with a real union, welding the two countries together into one powerful state, capable of withstanding our enemies.

Potential requirements Allow


Execute decision.pngForm Polish-Lithuanian Commonwealth (Lithuania)

Replace the personal union between Poland and Lithuania with a real union, welding the two countries together into one powerful state, capable of withstanding our enemies.

Potential requirements Allow


Execute decision.pngEnforce Polish-Lithuanian Commonwealth

Poland and Lithuania has a common history of close cooperation and through the Union of Vilnius and Radom our respective aristocracies where integrated with one another in 1413. While fate has since then brought us apart our interests remain closely aligned and now that we control both the core of the Lithuanian and Polish lands it is perhaps time we let our old friends become stakeholders in a joint state.

Potential requirements Allow

  • Becomes the Flag of Commonwealth Commonwealth
  • If Polish is not accepted culture or primary culture:
    • Add Polish as an accepted culture
  • If Lithuanian is not accepted culture or primary culture:
    • Add Lithuanian as an accepted culture
  • If is a member of the Holy Roman Empire but not the emperor or an elector:
    • All provinces are removed from the HRE
  • If is a duchy:
    • Becomes a Kingdom rank Kingdom
  • Gains permanent claim on all unowned provinces in the:
  • A random owned province with our primary culture gains Base tax.png1 Base tax
  • Gains Yearly prestige.png25 Prestige
  • Set country flag “formed_plc_flag”


  1. Lithuania starts with 48 provinces, so this is true unless they have gained 10 more.
  2. Poland starts with 22 provinces, so this is true unless they have gained 10 more.
Country guides

Central African technology group Central African.png Kuba.png KubaMutapa.png Mutapa
East African technology group East African.png Ethiopia.png EthiopiaMogadishu.png Mogadishu
Muslim technology group Muslim.png The Mamluks.png MamluksMorocco.png MoroccoTlemcen.png TlemcenTunis.png Tunis
West African technology group West African.png Air.png AirMali.png Mali

Eastern technology group Eastern.png Jerusalem.png Jerusalem Kharabakh.png Kharabakh
Muslim technology group Muslim.png Afghanistan.png Afghanistan Ajam.png Ajam Arabia.png Arabia Ardabil.png Ardabil Hisn Kayfa.png Hisn Kayfa Hormuz.png Hormuz Oman.png Oman Mushasha.png Mushasha Timurids.png Timurids Qara Qoyunlu.png Qara Qoyunlu
Indian technology group Indian.png Assam.png Assam Bahmanis.png Bahmanis Bengal.png Bengal Orissa.png Orissa
Chinese technology group Chinese.png Bali.png Bali Brunei.png Brunei Dai Viet.png Dai Viet Japan.png Japan Khmer.png Khmer Korea.png Korea Majapahit.png Majapahit Malaya.png Malaya Pagarruyung.png Pagarruyung Pasai.png Pasai Sunda.png Sunda
Nomadic technology group Nomadic.png Jianzhou.png Jianzhou Uzbek.png Uzbek Mongolia.png Mongolia

Western technology group Western.png United States.png United States
Mesoamerican technology group Mesoamerican.png Maya.png Maya
North American technology group North American.png Caddo.png Caddo Cherokee.png Cherokee Iroquois.png Iroquois

Andean technology group Andean.png Chachapoya.png Chachapoya Cusco.png Cusco Muisca.png Muisca
South American technology group South American.png Mapuche.png Mapuche