The Constitution of the Duchy of Warsaw was promulgated by Napoleon on 22 July 1807 in Dresden.

[1][2][3] Together with the Napoleonic Code it was a significant reform of Polish law and government in the new Duchy of Warsaw.

The Duchy of Warsaw was a satellite state of France, with no foreign policy of its own.

King Frederick Augustus I of Saxony became Duke of Warsaw, and had control over diplomacy; a French representative was to reside in Warsaw and had significant influence over the Duchy's government.

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