Explanation:
I'm pretty sure it is answer choice number 1
Two of the major reasons why the Vietcong was so successful against the United States was because they practiced "guerrilla warfare," which allowed them to constantly ambush US forces--and because they were being supplied with weapons from China and Russia.
B. Assimilation and the tolerance of conquered peoples will always result in the betterment of an Empire. Take the Romans, for example.
