Answer:
Was erected in 1961 by the Soviets to stem the rising tide of emigration from East Berlin to West Berlin.
Explanation:
The Berlin Wall began to be built in August 13th 1961. The main purpose of the wall was to keep western from entering East Germany and “undermining the socialist state” and also aimed to block the mass defection from East to West. The wall stood there until November 9th 1989.