American Indians were seen as “uncivilized,” so the Spanish tried to them.

assimilate

Explanation:  well, assimilate means to  adjust to something

so the spanish tried to assimilate them, making them adjust to something new like the customs of a culture or something like that so the american indians had to adjust to the customs of the spanish, how they look,  or how they act and so on  so the  american indians had to   resemble the spanish.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;