a former German state in N and central Germany, extending from France and the Low Countries to the Baltic Sea and Poland: developed as the chief military power of the Continent, leading the North German Confederation from 1867–71, when the German Empire was established; dissolved in 1947 and divided between East and West Germany, Poland, and the former Soviet Union. Area: (in 1939) 294 081 sq km (113 545 sq miles)