Answer:
The Monroe Doctrine is the best known U.S. policy toward the Western Hemisphere. Buried in a routine annual message delivered to Congress by President James Monroe in December 1823, the doctrine warns European nations that the United States would not tolerate further colonization or puppet monarchs.
It is a sentence with more than one subject or predicate. Hope this helps
The government wanted to weaken Native Americans so white settlers could migrate easier. Native Americans needed bison for their hides and sustenance. They also believed bison were sacred animals. Reducing bison weakened Native Americans in numerous ways. They were then forced to move from their locations to reservations so they could survive. The destruction of the bison was also the government's way to control the Native Americans.
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Through peaceful talks and non-violent demonstrations.