Answer:
First One
Explanation:
In the Colombian Exchange Over 80% of the New World died to disease and compared to when the Spanish first landed, there were less guerrilla fighters and they could settle plains and other cultivated land used by the now dead Americans.
Was primarily concerned with westward expansion and internal problems.
Answer:
A policy or attitude of letting things take their own course, without interfering.
Congress must issue a declaration of war, but since Vietnam, the US has gotten around that by claiming that they are taking 'defensive' actions or that it is a 'security' mission. It's a clever way to get around it.