Happy Juneteenth. Juneteenth is a federal holiday in the United States commemorating emancipation of enslaved African Americans. Black American Slaves have worked and built this country for 400 years for FREE! When slavery ended they were left with nothing and were denied the right to own their own land .Juneteenth is an important day in American history. It commemorates June 19, 1865, the day when the last enslaved people in the United States learned that they had been freed, more than two years years after the Emancipation Proclamation officially set them free. The day holds special significance for their descendants, and for anyone concerned about the evil of slavery, so we all should help everyone learn more about Juneteenth’s history spread the word.