Compromises of 1820 and 1850 · US History

The Missouri Compromise established which geographical boundary regarding the future of slavery in the Louisiana Purchase?

  1. The full length of the Mississippi River
  2. The 36° 30' northern latitude line
  3. The Mason-Dixon Line
  4. The 49th parallel
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Correct answer: The 36° 30' northern latitude line

Except for the state of Missouri itself, slavery was prohibited in the remainder of the Louisiana Purchase north of the 36° 30' line. This line served as the primary sectional boundary for the next 34 years.

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