1. Which best describes why the Soviet Union established buffer states around its borders?

Ato enlarge the country
Bto protect itself from direct invasion
Cto intimidate potential invaders
Dto promote European integration

  1. What was the Iron Curtain?

Aa term for the divide that isolated the East
Banother name for the Berlin Wall
CStalin’s term for the buffer states
Dthe name for the Soviet defense system

  1. Which of these most likely explains why people in the Eastern Bloc had little contact with the West?

AThey feared the West.
BThey had no access to Western culture.
CThey disproved of capitalism.
DThey could not travel freely.

Verified Answer :

1. As far as I remember, the Soviet Union established buffer states around its borders b. to protect itself from direct invasion. The most important states was Ukrainian SSR and eastern SSR. To protect borders from invasions from Europe and Asia.

2. Iron Curtain is a. a term for the divide that isolated the East. This division began at the end of WW2 (1945) until the fall of the Soviet Union.

3. I think there could be more than one option. I suggest you to choose between 
b. They had no access to Western culture. or d. They could not travel freely. As they're both correct. Try your luck.

the answer to 3 is actually  D They could not travel freely