Here is the excerpt from A Rumor of War which best illustrates Vietnam's uncomfortable climate:
<span><em>The tedium was occasionally relieved by a large-scale search-and-destroy operation, but the exhilaration of riding the lead helicopter into a landing zone was usually followed by more of the same hot walking, with the mud sucking at our boots and the sun thudding against our helmets while an invisible enemy shot at us from distant tree lines.</em></span>
The answer is D
A good way to remember this is to think about America before or pre-columbus, who came to the americas in 1492.
<span>Indoctrination involves forcibly causing people to act and think on the basis of a certain ideology. It
can make children adherent to the totalitarian political system and thus
enhance its development. This is usually achieved through propaganda, education
programs and censorship.</span>
