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How many states and free cities were included in the German Confederation?
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Congress of Vienna
The Congress of Vienna, watercolor etching by August Friedrich Andreas Campe; in the collection of the State Borodino War and History Museum, Moscow.
The German Confederation, established by the Congress of Vienna in 1815, was an organization composed of 39 German states.1
Within this confederation, only four were recognized as free cities: Hamburg, Lübeck, Bremen, and Frankfurt.2