January 1, 1863
President Abraham Lincoln issued the Emancipation Proclamation
 announcing, "that all persons held as slaves" within the
rebellious areas "are, and henceforward shall be free."
Note: The secession of South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, Texas, Virginia, Arkansas,
Tennessee, and North Carolina. These eleven states eventually formed the Confederate States of America.

April 8 1864
Senate passed 13th Amendment

June 15, 1864
The House of Representatives initially defeated the 13th Amendment (S.J. Res. 16) by a vote of 93 in favor,
 65 opposed, and 23 not voting, which is less than the two-thirds majority needed to pass a Constitutional Amendment.

Jan 31 1865 
U.S. House of Representatives Passed The 13th Amendment to the United States Constitution
abolishing slavery and involuntary servitude, except as punishment for a crime.

 President Abraham Lincoln shot April 14 1865,
Died  April 15, 1865, Petersen House, Washington, D.C.

But not everyone in Confederate territory would immediately be free. Even though the Emancipation Proclamation was made effective in 1863, it could not be implemented in places still under Confederate control. As a result, in the western most Confederate state of Texas, some enslaved people would not be free until two years later.

June 19 1865
 U.S. General Gordon Granger stood on Texas soil with some 2,000 Union troops and read General Orders No. 3: “The people of Texas are informed that, in accordance with a proclamation from the Executive of the United States, all slaves are free.

  Freedom finally came on June 19, 1865, to the enslaved people in the state of Texas.
This day came to be known as "Juneteenth," by the newly freed slaves in Texas. 

Dec 6, 1865
 The 13 Constitutional Amendment was ratified.
Slavery and involuntary servitude, except as punishment for a crime was abolished for all States .