Among the mounted nomads who came to dominate much of the southwestern plains of north america after 1500 c. e. were the select one: a. both b. and c. b. apache and navajo. c. cree and shoshone. d. ute and the mohawk. e. anasazi and arawak.

The answer is B.- Apache and Navajo

Explanation:

Apache its a native american tribe who lived in mexico northwest, which is now the EE.UU southwest. Their name comes from apachu that means enemy, and the name was given by the spanish people.  

When the spanish people arrived, the apaches had already reached EEUU southwest in a 500 years migration from Canada.

Apache belongs to atapascana family, so do their brothes, the Navajos. They lived  precariously in texas, where they were hunters and collectors of wild products.  

. political or economical policy that isolates a country from participating in international relationships. it has been suggested that the united states participates in isolationism because of its lack of involvement in particular wars or alliances.