There once existed the Kingdom of Prussia, which started from the German district of Brandenburgh. Prussia's power grew rapidly under King Friedrich II, and in 1772, consisted of the provinces of Brandenburg, Pomerania, Danzig, West Prussia and East Prussia (modern day East Germany, northern Poland, and a small portion of the Soviet Union). Prussia defeated France in Franco-Prussian war in 1871 and Bismarck became the Challencellor who unified the German states. In this way, under the leadership of Prussia, a powerful German empire was created. Wilhem II, who became the Emperor, ruled until the defeat of Germany in World War I. After defeat in World War I, Germany was forced to give up the Danzig Corridor to Poland and Danzig once again became a free city. This caused the province of East Prussia to be separated from the rest of Germany. The Rosenberg District was at this time contained in East Prussia. After Germany's defeat in World War II, West Prussia and East Prussia were divided by Poland and the Soviet Union While the once sprawling state of Prussia no longer exists - Prussia as an entity within Germany was dissolved in 1947 - its leaders left an enduring legacy that still enriches the German culture and landscape.