Why were the Vietcong so successful against the United States?

Question

A.The Vietcong held the strategically important Ho Chi Minh Trail.
B.U.S. troops could not engage the Vietcong in traditional warfare.
C.Vietcong forces had superior weapons and military training.
D.U.S. soldiers falsely overestimated the Vietcong's abilities.

Answer 1

http://www.pbs.org/battlefieldvietnam/guerrilla/index.html

http://en.wikipedia.org/wiki/Ho_Chi_Minh_trail