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 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 Japanese Census was not conducted until 1920, but other civilian and military population counts were carried out in the prior years between 1872 and 1918, and those form the source data for this article. When data is not available right on the turn of the decade, the closest year is used. In 1868, the Meiji Restoration deposed the Tokugawa Shogunate and founded the Empire of Japan. Many major cities had lost