Why was immigration limited under FDR’s presidency?

yes.

explanation:

because it let the japanese know who had the upper hand in the war.

the  wilmot proviso  was designed to eliminate  slavery  within the  landacquired as a result of the mexican war (1846-48). fearing the addition of a pro-slave territory, pennsylvania congressman david  wilmot proposedhis amendment to the bill.

very positive impact on our industries in the west, sine they promoted settlement and increased the ways in which goods could be transported to market.