The legislative outcome of the Civil War

The legislative outcome of the Civil War was the passage of the 13th, 14th and 15th Amendments. In order, these constitutional amendments freed all slaves, granted all males civil rights and guaranteed voting rights. These amendments transformed society. As the federal government moved away from the Civil War issues and focused instead on developing the West, many former slaves decided to just get up and move west in order to escape the social backlash, that was often violent, in the South. But many were not able to leave and only had these three constitutional amendments to depend on. Voting in particular was taken seriously.
For this week, write out 2-3 sentence definitions of the 13, 14 and 15th Amendment.