Respuesta :
Answer: C. The Cold War
Explanation:
"During 1989 and 1990, the Berlin Wall came down, borders opened, and free elections ousted Communist regimes everywhere in eastern Europe. In late 1991 the Soviet Union itself dissolved into its component republics. With stunning speed, the Iron Curtain was lifted and the Cold War came to an end."
from Historyhttps://americanhistory.si.edu › subs › history › timeline
I saw this question and was like "Hey, I remember talking about this..." so I looked it up to refresh my memory and here's proof.
Hope it helps