what was the reason for amendment 13 passed
by Gordon Leidner of Great American History. The 13th Amendment to the United States Constitution, passed by the Senate on April 8, 1864, by the House on January 31, 1865, and ratified on December 6, 1865, abolished slavery as a legal institution.he history behind this amendments adoption is an interesting one. Prior to the Civil War, in February 1861, Congress had passed a Thirteenth Amendment for an entirely different purpose--to guarantee the legality and perpetuity of slavery in the slave states, rather than to end it.