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
Iraqi diaspora in Europe in Denmark. This is partially due to the large number of Kurds who have emigrated from northern Iraq. The number of Iraqis in Finland is 32,778, which is the fourth largest in Europe, after Sweden, Germany and the UK. The current population of Iraqis in France is estimated at around 8,200. However, it has been reported that since the invasion of Iraq, France has only accepted 13 refugees. Some reports claim that there are 1,300 Iraqi refugees living in France. France is set to host 500 Iraqi Christian refugees. The number of Iraqis in Germany is estimated at around 150,000.