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 etc., are located in or near them. Counties in the United Kingdom have historic county towns, which are often not the largest settlement within the county and often are no longer administrative centres, as many historical counties are now only ceremonial, and administrative boundaries are different. In Canada, there is a federal capital, while the ten provinces and three territories all have capital cities. The states of such countries as Mexico, Brazil (including the famous cities of Rio de Janeiro and São Paulo, capitals of their respective states), and Australia all have capital cities. For example, the six state capitals