<span>Americans supported both mao zedong and chiang kai chek, but the maoist having a key advantage, which was the manpower. Also they were supported by the USSR, but mainly used their superior manpower to crush chiang.</span>
An advantage held by the South over the North at the start of the Civil War was B. it's soldier and generals believed they were protecting their homes and way of life. Since the South seceded from the North, all it had to do was exist to continue as an independent nation. It was up to the North to invade and restore order and thus the South was fighting a defensive war (much easier than the opposite - an offensive war).
The United States was able to pay for the construction of the Panama Canal by negotiating and financing land treaties with the governments of Panama and Columbia. The treaty came to be known as Mallarino- Bidlack treaty. This was a very important treaty for the Americans as they got the control of the Panama Canal.
I think is b) punish Boston