Prussia became part of the modern country of Germany. Parts of Prussia, however, became parts of Poland, Russia, Denmark, Belgium, Czechoslovakia and Lithuania after the German losses in World War I and World War II.
As the largest and most powerful of the German states before Germany's unification, Prussia used its military might, industrial strength and political power to persuade and bully the other states to form Germany into a modern country. Aided by his crafty minister Otto von Bismarck, King Wilhelm of Prussia became the first kaiser, or emperor, of the German Empire. Even after the defeat of World War I, Prussia remained a powerful member of the German state for many years until its formal abolition by the Allies in 1947, just after the German defeat in World War II.