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 cities proper. Source data is from the 2000 Census. In the mid-2000s, another series of municipal mergers was enacted. The "Great Heisei Mergers" nearly halved the number of municipalities in Japan, once again increasing the size of some cities significantly and creating new towns and cities. Despite a mounting population loss in rural areas and some smaller cities, Japan's major cities continue to grow. Source date is from the 2010 Census. Largest cities in Japan by population by decade This article lists the ten most populous cities in Japan by decade, starting after the Meiji Restoration of 1868. The first