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 World War in defeat, under temporary American administration. Many cities had been attacked by American bomber forces, and many of the largest cities suffered further loss as residents evacuated to more rural regions of the country. Cities, though, were already recovering quickly from their wartime lows. Source data is from the 1950 Census. A series of municipal mergers throughout the 1950s known as the "Great Showa Mergers" cut the number of municipalities in Japan by almost two thirds, significantly increasing the size of many cities in the process. By this time, almost all of Japan's largest cities had recovered war