Western Europe since the 11th century, divided Christianity in Europe, and consequently the world, into Western Christianity and Eastern Christianity. With certain simplifications, Western Europe is thus Catholic or Protestant and uses the Latin alphabet. Eastern Europe is Orthodox and uses the Greek alphabet or Cyrillic script. According to this definition, Western Europe is formed by countries with dominant Roman Catholic and Protestant churches, including countries which are considered part of Central Europe now: Austria, Belgium, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
Western Europe would give the following calculation of Western Europe's population. All figures based on the projections for 2018 by the Population Division of the United Nations Department of Economic and Social Affairs. Using the CIA classification a little more liberally and including "South-Western Europe", would give the following calculation of Western Europe's population. The climate of Western Europe varies from subtropical and semi-arid in the southern coast of Italy and Spain to alpine in the Pyrenees. The Mediterranean climate of the south is dry and warm. The western and northwestern parts have a mild, generally humid climate, influenced by the North