Juneteenth ✊🏽 “Lincoln’s 1863 Emancipation Proclamation declared "that all persons held as slaves" within the rebellious states "are, and henceforward shall be free." This meant that the proclamation only applied to states that had seceded from the United States, leaving slavery intact in border states and Southern states under Northern control. In addition, the promise of the abolishment of slavery was contingent on the Union army winning the Civil War, which didn’t happen until April 1865.
But even after that, the Union had to enforce emancipation. In Texas, approximately 250,000 people were still being held in slavery when, on June 19, 1865, Union troops, led by Major General Gordon Granger, arrived in Galveston to announce that the war had ended and that all slaves were now free.” https://www.teenvogue.com/story/juneteenth-celebration-meaning-explainer/amp