Short answers, pulled from the story.
The Thirteenth Amendment to the United States Constitution was certified as adopted on the 18th of December 1865. Twenty-seven states had ratified the amendment by the 6th of December 1865, meeting the three-fourths requirement out of thirty-six total states.
The Thirteenth Amendment to the United States Constitution made chattel slavery illegal throughout the United States. It also abolished involuntary servitude and peonage systems that trapped workers through debt cycles after emancipation.
President Abraham Lincoln signed the joint resolution for the Thirteenth Amendment to the United States Constitution on the 1st of February 1865. Congress later declared his signature unnecessary under Article V of the Constitution.
The House passed the Thirteenth Amendment to the United States Constitution with 119 members supporting the resolution and 56 opposing it on the 31st of January 1865. Eight Democrats abstained from voting, which reduced the threshold needed for passage to achieve a two-thirds majority.
Mississippi was the last state to ratify the Thirteenth Amendment to the United States Constitution when it did so in 1995. Kentucky and Delaware remained slaveholding states until the amendment took effect in December 1865 but had not formally ratified it at that time.