Amenican Indians who lived in the West
traded their manufactured goods with settlers
were able to resist diseases camed by settlers
offered their services as guides to settlers
prevented settlers from moving onto their terntory

American Indians who lived in the West tried to prevent settlers from moving onto their territory.

Explanation:

American Indians previously occupied the west  and viewed settlers as invaders.  However, resisting the encroachment of the settlers proved very difficult. The American Indians were forced onto reservations and the American settlers began to systematically kill the buffalo herds to try to weaken the American Indian position. The settlers broke many of the treaties the US government had established with the American Indians in the West, further taking their land.  Many heroic American Indians like Sitting Bull and Crazy Horse made  courageous efforts to save their people but unfortunately many communities were pressured onto reservations or assimilated and suffered violence.

it further strained relations between the north and the south and convinced