The Civil Rights act gives all blacks Civil Rights. But the blacks cannot get education or anything yet. It also bans Black codes.
The 13th Amendment was passed for Slaves to be free. So Slavery is no longer aloud in the United States. Then that means all the White slave owners had to give up their slaves.
All the freed slaves finally get to be citizens of the United States. So the blacks have about the same rights as white people. But the blacks are segregated between the whites still.
When the 15th Amendment was passed it gave the blacks a right to vote. So the blacks finally basically get to have their own opinion on who they want in as president. The blacks needed this because they were probably mad that the white people could vote but they couldn't.