How did john d. rockefeller vertically integrate his monopoly in 1882?

What was the main point of truman doctrine ?

Explain urbanization and industrialization enabled the dramatic change in american culture?

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.