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
Demographics of the Southern Cone of Southeastern Brazil is included, São Paulo is the largest city, with 19.8 million; in the Southern Brazil, the largest metropolitan area is Porto Alegre, with more than 4 million. Uruguay's capital and largest city, Montevideo, has 1.8 million, and it receives many visitors on ferry boats across the Río de la Plata from Buenos Aires, away. Asunción, Paraguay's capital city has a population of 2.1 million. As far as ethnicity is concerned, the population of the Southern Cone was largely influenced by immigration from Europe. Whites and mestizo make up 97% of the total population of Argentina, Chile, Uruguay