I believe it's either psychoanalytic theory or trait theory :)
Limited/scare resources and unlimited wants.
The correct answer is A) the Native Americans were forced to move west of the Mississippi River.
In the late 1700's many pioneers started moving into the Ohio Valley. The impact that this white movement had on the Native Americans that already lived in the Ohio Valley was that the Native Americans were forced to move west of the Mississippi River.
At the end of the 18th. century, white people started to move west and settled in the territories that formerly belonged to many Native American Indian tribes. Tribes in the Ohio River Valley were displaced due to the establishing of white Americans that had a different culture and tradition. These Native American Indians were displaced to other land and had to move further west to keep their own rituals, customs, and traditions.
The correct answer is a republican government. A republican government is being defined as the power of sovereignty are to be vested amongst the people and that the people also exercised this power. The people that are involved are likely to be chosen by the people.