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Duchy of Warsaw

The Duchy of Warsaw was a Polish state established by Napoleon Bonaparte in 1807 from the Polish lands he seized from the Kingdom of Prussia and the Habsburg Empire (Austria).

In 1812 the duchy was upgraded to the Kingdom of Poland, and during Napoleon's march on Russia, it was joined with the liberated territories of the Grand Duchy of Lithuania.

After the fall of Napoleon, according to the Peace of Vienna (1815), the territory of the Duchy was divided into three parts: