The correct answer is Option B) They United against Native American tribes.
Poeple moved to specific towns because they were united against the Native American tribes.
As the United States began to expand westwards, they encoursted lush landscapes with huge potential. However, all these places were already inhabited by numerous Native American tribes.
The government began to establish small towns in these places.
As more and more people heard about these prosperous areas, they began to converge and populate these towns.
The idea was to eventually drive the Native Americans out of their own land and use their abundant natural resources.
The reasons why the United States provided loans for the Latin American countries after they gained independence from Spain were mostly of economic and political interests.
By providing loans to these newly formed nations, the United States tried to create a positive opinion by the people in these nations about them, as they would have thought that the United States are helping them to develop. The real reason why the loans were granted though was to make these nations economically dependent and connected with the United States, thus the United States to have big power over them. Also, because this is a region in the neighborhood of the United States, they wanted to make sure that they would have things under control, create good relations with these nations, and avoid any future problems.