i’ll give brainliest!!!! please answer all of these for my history

Explanation:
27. What happened was that the South ended up losing to the north and thus communism was spread all through Vietnam.
28. The good news was that the theory didn't work out to be right. Communism only spread through Laos and Cambodia after the war, but it didn't spread to other nations like Thailand and India.
29. He mostly resumed American relations with China, and this practice was called Détente.
30. What it showed us was that America, an arsenal of democracy, couldn't contain communism in a nation as small as Vietnam.