What events led to the louisiana purchase?

In the mid-1800s, how did american indians often react to the us government signing treaties with tribal chiefs to establish reservations? many american indians did not accept the treaties and resisted relocating. many american indians fought for land taken away by the dawes act. many american indians bought land in oklahoma from white settlers. many american indians accepted the treaties and relocated voluntarily.

European expansion into africa left native regimes intact but had a strong impact on local societies what does this mean

Nationalsim led to major conflicts following world war1 especially when