From 1945 to 1990, the divided Germany began with the Berlin Declaration, marking the abolition of the German Reich and Allied-occupied period in Germany on 5 June 1945, and ended with the German reunification on 3 October 1990.
Following the collapse of the Third Reich in 1945 and its defeat in World War II, Germany was stripped of its territorial gains. Beyond that, more than a quarter of its old pre-war territory was annexed by communist Poland and the Soviet Union. The German populations of these areas were expelled to the west. Saarland was a French protectorate from 1947 to 1956 without the recognition of the "Four Powers", because the Soviet Union opposed it, making it a disputed territory.