Europe of population are Saint Petersburg, Madrid, Berlin and Rome, each having over 3 million residents. When considering the commuter belts or metropolitan areas, within the EU (for which comparable data is available) London covers the largest population, followed in order by Paris, Madrid, Barcelona, Berlin, the Ruhr area, Rome, Milan, Athens and Warsaw. "Europe" as a cultural concept is substantially derived from the shared heritage of the Roman Empire and its culture. The boundaries of Europe were historically understood as those of Christendom (or more specifically Latin Christendom), as established or defended throughout the medieval and early modern history of
Largest cities in Japan by population by decade losses and exceeded their prewar populations. Source data is from the 1960 Census. Tokyo and Osaka began to experience a trend of suburbanization, as people left the cities for the less densely peopled surrounding municipalities. Other major cities continued to grow rapidly. Source data is from the 1970 Census. Source data is from the 1980 Census. By 1990, almost all the largest Japanese cities had assumed their present-day population ranking. Source data is from the 1990 Census. By 2000, the ongoing suburbanization drawing population from Tōkyō and Ōsaka was showing signs of abating, with people slowly moving back into the