Which country invaded afghanistan in an attempt to gain an ally in the cold war?
a. great britain
b. the soviet union
c. armenia
d. india

As I know the country that invaded Afghanistan in an attempt to gain an ally in the Cold War was the Soviet Union. As they needed a support from the other sides. The other options seem not to be right at all because they didn't participate in the invasion in Afghanistan. So choose B. The Soviet Union.

Not sure this is a hard one huh