Answer:
promoting an ethnically homogeneous society through restrictions on immigration
Explanation:
A nativist is a person or organization that promotes the interests and rights of the Native People of a place, over the interests and rights of people from other places.
Thus, nativists organizations of the nineteenth century promoted an ethnically homogenous society that consisted in Native People only. For this reason, they mainly opposed immigration, due to several concerns: from labor market, to social and cultural concerns, to even racism.
the spanish war is important because it was proably the first conflict that broke out and the native american indians won so it got important because it was the first time in years they had ever won a war