why was berlin wall built
It was built (or rather, started) on 13 August 1961.   The Berlin Wall   Construction of the Berlin Wall started on 13 August 1961. It separated East and West Berlin a â¦ nd plugged the last 'gap' in the Iron Curtain which divided Europe into two blocs.he main reason for building the Berlin Wall was to prevent a brain drain from East Germany to West Germany. From 1945 until the building of the wall, approximately 3.5 million people escaped into West Germany (including many Poles and Czechs.