Question

The U.S. did not provide reconstruction aid to Vietnam as President Nixon had promised. Instead, President Ford extended to all of Vietnam.

1. Blockade
2. Trade
3. Embargo
4. Capitalism

Answer 1

I believe the correct answer is 3. embargo.
President Ford imposed an embargo on Vietnamese trade following the victory of communist North Vietnam over South Vietnam in 1975. This embargo (which are economic and trade sanctions) lasted until 1994, when President Clinton ended it.