Why were some hillsides cut into long steps during when the Incas lived??

On the graph, the bottom horizontal line represents

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.

What role did imperialism play in world war 2