Protecting the interests of native-born or established inhabitants against those of immigrants
In this agreement, the Pope established a Line of Demarcation. Both countries came to an agreement that Spain would take all territory/land West of the line and Portugal the East (including part of Brazil) to explore and claim.
They are good for us military bases, allies, trade, and other natural resources that aren’t in the states
The declaration of independance? Is that what you are looking for?