Answer:
Nativism is the political policy of promoting or protecting the interests of native or indigenous inhabitants over those of immigrants, including the support of immigration-restriction measures.
Because the v.k. would use Cambodia and Laos as part of the chi Minh trail to be able to transfer guns and ammunition
Tensions were very high during that time period. so many alliacnces were made as well as rivalries. it was a "powder keg" and when he was killed the keg exploded
Weak and improving well thats what i think also its the right answer