America's view in the Vietnam was fear. Fear drove them to participate in the war. Why fear? They were afraid Vietnam would become communist because if they became communist they would support or have the support from the Soviets. If this were to happen Vietnam could've became a missile launching spot for the soviets if America wouldn't have participated.
It's my best explanation from what I remember and from what I think. Hope it's helpful to you.
When you put these questions up it would be smart to add the answer choices
Religious thinkers began to question the authority of the Roman Catholic Church.
The answer to this would be A.
It’s a solid .
