Germany was first named in 56 BC by Julius Caesar. It has since been ruled by many groups including the Franks and Charlemagne. Germany experienced much war and upheaval over centuries, and was divided after World War II into East and West Germany. Germany now has a large economy focused on industries like automaking. The culture includes traditions like Oktoberfest, foods like weisswurst, and the Christmas song "O Tannenbaum."