North Vietnam no longer exists. Neither does South Vietnam. They united in April 1975, when NVA tanks crashed thru the South's capital's front gates, ending the war. It's VIETNAM now.
Even though Vietnam is a communist country, the US does business with Vietnam. The US promotes good business. Friends? Sure, why not.
North Vietnam was controlled by communists.
The US. Only the US was bombing North Vietnam. Although American and Australian men 'o war were bombarding North Vietnam along their coastline.
The US conducts business (trade) with Vietnam, so yes.
North Vietnam threatened South Vietnam. I.S.
The US was an ally of South Vietnam; it was up to South Vietnam to repel the invasion from the north, with massive military assistance from the US (which, of course, ultimately failed).
north Vietnam took over south Vietnam
The US wanted N. Vietnam to stop fighting in S. Vietnam.
The answer is (A) Because the North Vietnam took over the South Vietnam
South Vietnam
North Vietnam verses the US & it's allies.
Nixon.