Capital city meaning "head". In several English-speaking states, the terms county town and county seat are also used in lower subdivisions. In some unitary states, subnational capitals may be known as "administrative centres". The capital is often the largest city of its constituent, though not always. Historically, the major economic centre of a state or region often becomes the focal point of political power, and becomes a capital through conquest or federation. (The modern capital city has, however, not always existed: in medieval Western Europe, an itinerant (wandering) government was common.) Examples are Ancient Babylon, Abbasid Baghdad, Ancient Athens, Rome, Constantinople, Chang'an,
Capital city as Dresden, Wiesbaden, Mainz, Düsseldorf, Stuttgart, and Munich, as do all of the republics of the Russian Federation. The national capitals of Germany and Russia: the Stadtstaat of Berlin and the Federal City of Moscow, are also constituent states of both countries in their own right. Each of the States of Austria and Cantons of Switzerland also have their own capital cities. Vienna, the national capital of Austria, is also one of the states, while Bern is the ("de facto") capital of both Switzerland and the Canton of Bern. Many national capitals are also the largest city in their respective