give an economic example of one change caused by the Civil War. & a Economic example of one challenge to change. please help! ​

Morning how ur day and quick question who started the civil war?

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.

Arguments supporting and opposing the supreme court decision citizens united v. federal election commission identify two reasons why some supporters of the decision consider it a victory for free speech.