I believe it is E. MacArthur.
In government, the term authority is often used interchangeably with power. However, their meanings differ: while power is defined as "the ability to influence somebody to do something that he/she would not have done", authority refers to a claim of legitimacy, the justification and right to exercise that power.
The effect of the US entering the war was great for America since nothing happened to its land and none of the money had to be used to recover there for keeping up its Economy but US did however damage countries like Japan for example.
