Berlin is the capital city and one of the sixteen states of the Federal Republic of Germany. With a population of 3.4 million in its city limits, Berlin is the second most populous city proper and the ninth most populous urban area in the European Union.Located in northeastern Germany, it is the center of the Berlin-Brandenburg metropolitan area, comprising 4.9 million people from over 180 nations.Berlin was the capital of the Kingdom of Prussia (1701-1918), the German Empire (1871-1918), the Weimar Republic (1919-1933) and the Third Reich (1933-1945).After World War II, the city was divided; East Berlin became the capital of East Germany while West Berlin became a Western enclave, surrounded by the Berlin Wall from 1961-1989
