What was the purpose of the Berlin Wall? to protect the Soviet Union from an invasion by the US and its allies

to protect democratic Western Europe from a Soviet invasion

to prevent citizens of communist East Berlin from escaping to democratic Western Berlin

to prevent citizens of communist East Berlin from escaping to democratic Western Berlin

to prevent Soviet spies from infiltrating democratic Western Europe

A) To protect the Soviet Union from an invasion by the US and its allies

Explanation:

The Berlin Wall was built by the German Democratic Republic during the Cold War to prevent its population from escaping Soviet-controlled East Berlin to West Berlin, which was controlled by the major Western Allies.

 a

The Berlin Wall was built by the German Democratic Republic during the Cold War to prevent its population from escaping Soviet-controlled East Berlin to West Berlin, which was controlled by the major Western Allies. It divided the city of Berlin into two physically and ideologically contrasting zones

Explanation:

radiant energy is a form of kinetic energy only.(a)

answer; triadic reciprocal determinism;