General Confederation of the Kingdom of Poland

Kingdom of Poland
1812–1813
Seal:
The territories of the General Confederation of the Kingdom of Poland, including the Duchy of Warsaw, and the Lithuanian Provisional Governing Commission, at their territorial peak in 1812.
CapitalWarsaw
Common languagesPolish, French, German, Lithuanian, Belarusian
Demonym(s)Polish
GovernmentConstitutional monarchy
King 
 1812–1813
Frederick Augustus I
Marshal of the General Council 
 1812–1813
Adam Kazimierz Czartoryski
History 
 Declared
28 June 1812
 Dissolved
30 April 1813
CurrencyZłoty
Preceded by
Succeeded by
Duchy of Warsaw
Lithuanian Provisional Governing Commission
Duchy of Warsaw
Russian Empire
Today part ofLithuania, Belarus, Poland

The General Confederation of the Kingdom of Poland (28 June 1812 – 30 April 1813; Polish Konfederacja Generalna Królestwa Polskiego) was a governing body of the Duchy of Warsaw created by Napoleon Bonaparte and the Polish political elite on the onset of Napoleon's campaign against Russia, which was proclaimed as "the second Polish war". It took the form of a confederated sejm (parliament). Officially assembled on 28 June 1812, it oversaw the formal transformation of the Duchy of Warsaw into the "Kingdom of Poland".

The newly renamed state laid claim to the territory annexed by the Russian Empire during the partitions, the so called "seized lands" or "seized country" (Polish Ziemie zabrane), which were formally retaken in July 1812. After the defeat of Napoleon in 1813 and the Russian occupation of the Duchy, the Confederation's accomplishments were rendered null in practice.