"Was America's
economic and political expansion good or bad for America
and the World?"

i would say both good  and bad, as it let presidants, who not only look like a orange but who have one as a brain, be in charge but it also let people like obama become presidant.

Explanation:

As reports from the field became increasingly accessible to citizens, public opinion began to turn against U.S. involvement, though many Americans continued to support it. Others felt betrayed by their government for not being truthful about the war. This led to an increase in public pressure to end the war.