18 January 1871 (German Empire unification); divided into four zones of occupation (UK, US, USSR, and later, France) in 1945 following World War II; Federal Republic of Germany (FRG or West Germany) proclaimed 23 May 1949 and included the former UK, US, and French zones; German Democratic Republic (GDR or East Germany) proclaimed 7 October 1949 and included the former USSR zone; unification of West Germany and East Germany took place 3 October 1990; all four powers formally relinquished rights 15 March 1991
Religions
Christian 79.9%, Muslim 12.8%, other 3%, none 4.3% (1998 census)
Protestant 34%, Roman Catholic 34%, Muslim 3.7%, unaffiliated or other 28.3%
