Who was the 13th President of the United States?

The thirteenth amendment to the Constitution of the United States was proposed to the legislatures of the several states by the Thirty-eighth Congress, on January 31, 1865. Although it was ratified by the necessary three-quarters of the states within a year of its proposal, its most recent ratification occurred as recently as 1995, in Mississippi, which was the last of the thirty-six states in existence in 1865 to ratify it.