Amendment XIII (anti-slavery) was passed by Congress on January 31, 1865 and ratified on December 6, 1865.
Amendment XIV was passed by Congress June 13, 1866 and ratified on July 9, 1868. Amendment XIV has four parts - these are briefly summarized below. Note that Section 2 has been itself amended to allow any US citizen over eighteen years of age the right to vote.
i) all people born in the US are US citizens.
ii) males over twenty-one years of age can vote (see 26th amendment)
iii) no official representative (military, government) should act against the interests of the USA
iv) the government can spend how it sees fit, except to support treason or to claim compensation over the freedom of a slave
Amendment XV (no judgement based on color, race or background) was passed by Congress on February 26, 1869 and ratified on February 3, 1870.