The Vietnam war was in favour of the Northern revolutionary forces. Just after the war, a peace treaty was signed which allows a government to be initiated in the Southern Vietnam, to find out that it has become a puppet government of the North, therefore, Vietnam remained to be a communist state.
Answer: Korea
Explanation: United States was trying to stop the spread of Communism.
Genghis kong was the leader that United China and lead forces to the Roman empire
It was an agreement to treat christians nicely/fairly in the Roman Empire, rather than treating them poorly. It was later that christianity became the most popular religion there. Hope I helped :)