- 
  
  The Missouri Compromise is a event that admitted Missouri as a slave state and Maine as a free state.This event may have led to the Civil War.
 - 
  
  Dred Scott was a African-American who lived in a free state but was kept as a slave and flied a lawsuit for his freedom but it was turned down.This event led to Abraham's election a few years later.
 - 
  
  The Battle of Antietam was the bloodiest single day battle.This battle led to the victory of the Union.
 - 
  
  Andersonville is one of the first prisons ever made.This was a prison that held union prisoners.
 - 
  
  The KKK is a group of white men that kill or force African-Americans back on plantations.The white men did this because they believed that blacks shouldn't be free.
 - 
  
  The 13th Amendment is a amendment that abolished slavery.People went against this amendment and created ''Black Codes'' but the codes didn't last very long.