Communist northern Korea invaded non-communist southern korea, and the U.S. intervened because they hate everything communist and because southern Korea was an ally; this was the first hot war of the Cold War
True because congress controls spending. The government can't spend anything without congress's approval.
A lawmaking body with a single house of elected representatives
The Manifest Destiny was the belief that America need to expand its borders. This shaped the use due to the fact that if caused many disputes among the natives and Mexicans that controlled most of the land that was unclaimed.