The Missouri Compromise of 1820 balanced the number of free and slave states by admitting Missouri as a slave state and Maine as a free state. It also prohibited slavery in territories north of the 36°30' parallel, excluding Missouri. This compromise temporarily resolved the issue of the expansion of slavery but increased sectional tensions and ultimately failed to prevent the Civil War.

1. Missouri
Compromise
1820

2. Background
 Louisiana Purchase-1803
 Missouri Territory grew in population and
applied for statehood in 1819.
 James Tallmadge proposed a bill to ban
slavery.
 There were 22 states. 11 free states and 11
slave states.

3. The Compromise
 In 1820 Maine applied for statehood.
 Henry Clay proposed a bill to make
Missouri a slave state and Maine a free
state in March of 1820.
 36° 30 line.
 This was all combined into one bill in the
Senate.
 Missouri finally became a state in 1821.

4. Map

5. What was accomplished?
 Balance was preserved.
 North gained great amounts of land that
could never have slavery.
 South gained another slave state where
they could bring slaves.

6. Attitudes
 Although this topic was debated strongly
by both sides, neither was too terribly
unhappy with the outcome.
 Northern land wasn’t ideal for slaves.

7. Long-Term effects
 Lasted for 34 years.
 Repealed by Kansas-Nebraska act in 1854
 Declared unconstitutional
 Foreshadowed the Civil War

8. The End