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Primary culture
Cornish (British)

Capital province
Cornwall (233)

Feudal Nobility Government monarchy.png

State religion

Technology group
WesternWestern technology group
Cornish ideas
Traditions.png Traditions:
+10% Production efficiency
−10% Recruitment time

National unrest.png Stannary Parliaments

−2 National unrest

Attrition for enemies.png Cornish Rebels

+1 Attrition for enemies

Tolerance own.png Prayer Book Traditionalism

+2 Tolerance of the true faith

Privateer efficiency.png Pirates of Penzance

+20% Privateer efficiency
+10% Chance to capture enemy ships

Land force limit modifier.png Cornish Royalist Army

+20% Land force limit modifier

Movement speed.png The Gear Rout

+15% Movement speed

Prestige decay.png Arthurian Romanticism

−1% Prestige decay

Idea bonus.png Ambition:

+10% Morale of armies

Cornwall is a nation located in south-western Britain. It does not exist in any game start, for either Flag of England England or Flag of Great Britain Great Britain will own its singular core. However, it can be released through any of the three standard methods of releasing nations.


Cornwall is able to form Flag of Great Britain Great Britain militarily (only Flag of England England and Flag of Scotland Scotland have access to the diplomatic option):


Execute decision.pngForm British Nation

By uniting our political development domestically and extending our influence beyond our borders we will be able to reinforce our position in world affairs and transform into one of the foremost European powers, the British Empire.

Potential requirements

Flag of Great Britain Great Britain does not exist.
The country:

If the country is AI-controlled then it:


The country:


If London (236) is part of the HRE, but its owner is not a member then:

  • the province is removed from the HRE.
  • the Holy Roman Emperor:
    • gets the opinion modifier “Removed provinces from the Empire” towards the owner, worth Opinion.png−50 opinion with a yearly decay of 1.
    • loses Imperial authority.png1 imperial authority.

London (236):

  • becomes the new capital of the owner country.

The country:

  • becomes Flag of Great Britain Great Britain.
  • gets new Mission.png missions.
  • (hidden) completes the mission War of the Roses without rewards.
  • gains Prestige.png25 prestige.
  • gets a permanent claim on every province of Britain that it does not own.
  • gets the modifier “Increased Centralization” for 20 years with the following effects:
    • Autonomy.png−0.05 monthly autonomy change,
    • National unrest.png+1 national unrest.

If Great Britain:

  • is a member of the Holy Roman Empire but not the emperor or an elector
    • then all its provinces are removed from the HRE.
  • is a duchy
    • then it becomes a Kingdom rank kingdom.
  • does not have custom ideas
  • (hidden) was formed by Flag of Scotland Scotland
  • (hidden) was formed by Flag of Ireland Ireland
  • has completed the mission Conquer Scotland and the Rule Britannia.png ‘Rule Britannia’ DLC is enabled
    • then:
      • it gets permanent claims on Orkney (369), Shetland (1978) and Färöarna (1979)
      • it gets claims on all provinces of the Iceland area which it does not own and which are not its core provinces.
  • has completed the mission Colonize Spice Islands and the Rule Britannia.png ‘Rule Britannia’ DLC is enabled
    • then it gets claims on all provinces of West Bengal which it does not own and which are not its core provinces.
Country guides

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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
Muslim technology group Muslim.png Arabia.png Arabia Ardabil.png Ardabil Hisn Kayfa.png Hisn Kayfa Oman.png Oman
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 Timurids.png Timurids Uzbek.png Uzbek

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