Which term refers to a wall built in 1961 to separate East Berlin from West Berlin?

• A. Berlin Airlift
• B. Berlin Wall
• C. Big Stick Diplomacy
• D. Bonus Army

Answer: (B)

This term describes the barrier erected in 1961 by East German authorities, with Soviet backing, to separate East Berlin from West Berlin. It was built to stop people fleeing from the communist East to the more prosperous West and ended up symbolizing the broader divide of the Cold War. The wall stretched across the city with guard towers and checkpoints, effectively sealing off both sides for decades until it fell in 1989 as East and West Germany moved toward reunification.

The other terms refer to different events or ideas: the Berlin Airlift was the 1948–49 effort to supply West Berlin by air during a Soviet blockade; Big Stick Diplomacy is a Roosevelt-era foreign policy approach; the Bonus Army was a 1932 veterans’ protest in Washington, D.C.