When was Slavery banned...?

Question

in the northeren part of the U.S.?

Please help I cant find it anywhere!

Answer 1

Good question
1780 March 1st
Pennsylvania became the first state to abolish slavery.
The Pennsylvania Gradual Abolition Act of 1780 was the first emancipation statute in the United States.

1791 March - - While the Capital was still located in Philadelphia, George Washington, fearing the impact of a Pennsylvania law freeing slaves after six months residence in that state, instructed his secretary Tobias Lear to ascertain what effect the law would have on the status of the slaves who served the presidential household in Philadelphia. In case Lear believed that any of the slaves were likely to seek their freedom under Pennsylvania law, Washington wished them sent home to Mount Vernon.

In New York state - abolition of slavery was later and more gradual (see excerpt below)

In 1799 the New York Legislature passed "An Act for the Gradual Abolition of Slavery" with only token opposition. It provided for gradual manumission on the Pennsylvania model, which allowed masters to keep their younger slaves in bondage for their most productive years, to recoup their investment. The law freed all children born to slave women after July 4, 1799, but not at once. The males became free at 28, the females at 25. Till then, they would be the property of the mother's master. Slaves already in servitude before July 4, 1799, remained slaves for life, though they were reclassified as "indentured servants." The law sidestepped all question of legal and civil rights, thus avoiding the objections that had blocked the earlier bill.

Slavery would be abolished state by state in the non slave states before the Civil War. To find the exact dates, you have to look up "abolition of slavery" in each state.

Answer 2

By the 13th Amendment ot the Constitution....1865

Section 1. Neither slavery nor involuntary servitude, except as a punishment for crime where of the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.
Section 2. Congress shall have the power to enforce this article by appropriate legislation.
”


Proposal and ratification
The Thirteenth Amendment to the Constitution of the United States was proposed to the legislatures of the several states by the Thirty-eighth United States Congress, on January 31, 1865. The amendment was declared, in a proclamation of Secretary of State William Henry Seward, dated December 18, 1865, to have been ratified by the legislatures of twenty-seven of the then thirty-six states. Although it was ratified by the necessary three-quarters of the states within a year of its proposal, its most recent ratification occurred in 1995 in Mississippi, which was the last of the thirty-six states in existence in 1865 to ratify it. The dates of ratification were:[1]

Illinois (February 1, 1865)
Rhode Island (February 2, 1865)
Michigan (February 3, 1865)
Maryland (February 3, 1865)
New York (February 3, 1865)
Pennsylvania (February 3, 1865)
West Virginia (February 3, 1865)
Missouri (February 6, 1865)
Maine (February 7, 1865)
Kansas (February 7, 1865)
Massachusetts (February 7, 1865)
Virginia (February 9, 1865)
Ohio (February 10, 1865)
Indiana (February 13, 1865)
Nevada (February 16, 1865)
Louisiana (February 17, 1865)
Minnesota (February 23, 1865)
Wisconsin (February 24, 1865)
Vermont (March 8, 1865)
Tennessee (April 7, 1865)
Arkansas (April 14, 1865)
Connecticut (May 4, 1865)
New Hampshire (July 1, 1865)
South Carolina (November 13, 1865)
Alabama (December 2, 1865)
North Carolina (December 4, 1865)
Georgia (December 6, 1865)
Ratification was completed on December 6, 1865. The amendment was subsequently ratified by the following states:

Oregon (December 8, 1865)
California (December 19, 1865)
Florida (December 28, 1865, reaffirmed on June 9, 1869)
Iowa (January 15, 1866)
New Jersey (January 23, 1866, after having rejected it on March 16, 1865)
Texas (February 18, 1870)
Delaware (February 12, 1901, after having rejected it on February 8, 1865)
Kentucky (March 18, 1976, after having rejected it on February 24, 1865)
Mississippi (March 16, 1995, after having rejected it on December 5, 1865)