They were interested for two reasons , they were in a power battle where they both wanted to be more powerful , as a result of this they both wanted to have influence over as many places as possible. The other reason is that having influence over certain places can give powerful allies which means in the worst case scenario they have more people on their side. Hope this helped :)
Answer:
One reason that native-born americans felt more threatened by the "new" immigrants than they had by the "old" immigrants was that the "new" immigrants brought different cultures and languages. These Nativists believed they were the true “Native” Americans, despite being descended from immigrants.
Explanation:
Africa, Asia and Latin America provided a source of free human labor. (If my question is incorrect feel free to delete it).
He wanted to get strong enough to take persia
The presidential and the congressional signed the Emancipation Proclamation to solve the civil war.