SAT Subject US History Practice Question 661: Answer and Explanation

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Question: 661

12. The Northwest Ordinance of 1787 was significant because it

A. ended British control of the Ohio Valley.
B. prohibited the extension of slavery into the Northwest Territory.
C. prevented slavery north of the 36° 30' north latitude line.
D. secured peaceful relations between the colonists and the Native Americans.
E. settled a dispute over the location of the boundary between Canada and the United States.

Correct Answer: B

Explanation:

The Northwest Ordinance of 1787 established a guideline for the settlement of the Ohio Valley. One of its provisions was the prohibition of slavery in this territory. It also provided that no less than three or more than five states were to be formed in this territory. British control of the Northwest Territory (A) ended with the Revolutionary War in 1783. The Missouri Compromise established the 36° 30' (C) as the demarcation point between slave and free states. The Ordinance encouraged peaceful relations with Native Americans (D), but these were never achieved. The Clayton-Bulwer Treaty (1850) settled the border between Canada and the United States (E) in the Great Lakes region.

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