What impact might exploration of the Spanish borderlands have on the present-day United States?

Settling the Borderlands As conquistadors explored new territories, they claimed the areas for Spain. By 1600, the Spanish borderlands extended west from Florida across present-day Texas, New Mexico, Arizona, and California. At first, Spain did little to encourage settlement in these far-flung areas.

the lowest among the social higher rank were the working class. this class remained detached to the political progression   of the country and was hostile to the other two classes

four sitting presidents have been assassinated while in office but the first was abraham lincoln,