<Li> the French sector, consisting of the Boroughs of Wedding and Reinickendorf; (See: commandants of Berlin French Sector) </Li> <Li> the Soviet sector, consisting of the Boroughs of Mitte, Prenzlauer Berg, Pankow, Weißensee, Friedrichshain, Lichtenberg, Treptow, and Köpenick; (see: commandants of Berlin Soviet Sector). </Li> <P> The Soviet victors of the Battle of Berlin immediately occupied all of Berlin . They handed the American, British and French sectors (later known as West Berlin) to the American and British Forces in July 1945: the French occupied their sector later . Berlin remained divided until reunification in 1990 . </P> <P> The Soviets used the period from May 1945 to July 1945 to dismantle industry, transport and other facilities in West Berlin, including removing railway tracks, as reparations for German war damage in the Soviet Union . This practice continued in East Berlin and the Soviet occupation zone after 1945 . Conditions were harsh, and hundreds of thousands of refugees from the East kept pouring in . Residents depended heavily on the black market for food and other necessities . </P>

When was berlin split into east and west