Please help ASAP write in complete sentences answer only if you know if you spam, or don’t know or put links I will report

Overnight, the freedom to pass between the two sections of Berlin ended. Running across cemeteries and along canals, zigzagging through the city streets, the Berlin Wall was a chilling symbol of the Iron Curtain that divided all of Europe between communism and democracy. Berlin was at the heart of the Cold War.

Explanation:

answer; necessity-driven;