What three constitutional amendments were passed soon after the civil war?

The 13th the 14th and the 15th amendments were passed shortly after the Civil War.
The Thirteenth Amendment to the United States Constitution abolished slavery and involuntary servitude, except as punishment for a crime.
The Fourteenth Amendment addresses citizenship rights and equal protection of the laws, and was proposed in response to issues related to former slaves following the American Civil War.
The Fifteenth Amendment prohibits the federal and state governments from denying a citizen the right to vote based on that citizen's "race, color, or previous condition of servitude."