Europe (Napoleon IV)

Western Europe
Empire of the French

United Kingdom of Great Britain and Ireland

Kingdom of Belgium

Kingdom of the Netherlands

Central Europe
Kingdom of Hanover

Kingdom of Prussia

Austrian Empire

Kingdom of Bavaria

Swiss Confederation

Southern Europe
Portuguese Republic

Kingdom of Spain

Kingdom of Italy

Kingdom of Lombardy-Venetia

State of the Church

Kingdom of Greece

British Protectorate of Cyprus

Balkans
Kingdom of Serbia

Principality of Montenegro

Principality of Bulgaria

Ottoman Empire

Eastern Europe
Russian Empire

Kingdom of Romania

Northern Europe
United Kingdoms of Sweden and Norway

Kingdom of Denmark