West Germany is the colloquial English term used to describe the
Federal Republic of Germany from its formation on 23 May 1949 until the reunification of Germany through the accession of East Germany on 3 October 1990. During the Cold War, the western portion of Germany and the associated territory of West Berlin were parts of the Western Bloc. West Germany was formed as a political entity during the Allied occupation of Germany after World War II, established from 12 states formed in the three Allied zones of occupation held by the United States, the United Kingdom, and France. The FRG's provisional capital was the city of Bonn, and the Cold War–era country is retrospectively designated as the
Bonn Republic.