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
History of the Jews in Europe claimed to be Mizrahim. Jewish religious life thrived in many Polish communities. In 1503, the Polish monarchy appointed Rabbi Jacob Polak, the official Rabbi of Poland, marking the emergence of the Chief Rabbinate. Around 1550, many Sephardi Jews travelled across Europe to find a haven in Poland. Therefore, the Polish Jews are said to be of many ethnic origins including Ashkenazic, Sephardic, and Mizrahi. During the 16th and 17th century Poland had the largest Jewish population in the whole of Europe. By 1551, Polish Jews were given permission to choose their own Chief Rabbi. The Chief Rabbinate held power over