Confederation of the Rhine

State · 1809–1814 CE · at its largest around 1814 CE

A confederation of German client states under Napoleon's protection, whose formation led to the dissolution of the Holy Roman Empire in 1806.

On its lands while it lasted

• Königsberg (1255–1945 CE): Capital of Duchy of Prussia (1526–1618), Brandenburg-Prussia (1619–1701).
• Free City of Frankfurt (1372–1866 CE): Capital of Confederation of the Rhine (1809–1813), German Confederation (1815–1863).
• Johann Wolfgang von Goethe (1749 CE – 1832 CE): German poet, playwright, novelist and scientist who lived in Weimar from 1775. Author of Faust and The Sorrows of Young Werther.
• Frédéric Chopin (1810 CE – 1849 CE): Polish composer and pianist who grew up in Warsaw and settled in Paris in 1831. His piano works are central to Romantic music.
• Grimms' Fairy Tales (1812 CE): Brothers Jacob and Wilhelm Grimm published the first volume of their collection of German folk tales in 1812 while living in Kassel.

More on Wikipedia.