Juneteenth celebrates the emancipation of the remaining enslaved African-Americans in the Confederacy states. Although the Emancipation Proclamation was made effective in 1863, it could not be implemented in places still under Confederate control, and not everyone in Confederate territory would immediately be freed. In the westernmost Confederate state, Texas, enslaved people would not be free until June 19, 1865. On this day Union troops arrived in Galveston Bay, Texas and announced that those enslaved were now free by executive decree.