The minorties were put out to be a human sheld and protect as soldiers
It would interfere with their trade alliances.
Communism leads to the government taking control of resources and industry. If it spread into areas the US did business, they could lose the ability to control resources and trade. This would eventually impact our political power and any military advantages the US had in Europe.
Designating additional land as national parks
<span>He felt that slaves will feel out of place in their society if they see that slavery still existed while the rest of humanity was moving forward. This would lead to agitation on their part and a wish to throw off the shackles of bondage that slavery brings.</span>
It is called isolationism. We stayed out other peoples business because we were a new country. We now dominate the entire west.