- 
  
  adding Texas to the United States gave more land to make plantations which encouraged the growth of slavery.
- 
  
  - Cotton gin was a faster way of producing cotton. Eventually the soil had to be changed and they had to move west to conquer more lands. This increased the amount of slaves
 
- 
  
  1812
- 
  
  1849
- 
  
  1831
- 
  
  1830
- 
  
  add M.I. as slave state and Main as a non-slave state to balance slave and non-slave states out
- 
  
  people who wanted lands in the West gained to the U.S. from the Mexican American War to be non-slave states.
- 
  
  Ab Lincoln and people who wanted to end slavery in western states
- 
  
  John(abolitionist) led followers and African-Americans to raid a arsenal. After 2 days, they were stopped by soldiers and John was charged of murder and treason and sentenced to death. However, he was looked as a hero and martyr to the Northerners, but the white southerners thought John was insane!
- 
  
  Divided Nebraska into 2 territories, Kansas and Nebraska. People in each territory would decide slavery by popular sovereignty. Southerners agreed with act, but Northerners did not.
- 
  
  Dred Scott was an enslaved African-American looking for freedom. With his master, he moved from Missouri to Illinois then Wisconsin. His master died in Wisconsin and since that territory was a free state, he believed he should be freed. Court said Dred didn't have right to file a lawsuit (b/c enslaved) and said many racist things. But called Missouri Compromise unconstitutional. Northerners angry, Southerners happy.
- 
  
  Anti-slavery ppl from the Whigs and Democratic parties.