The answer is navigation, date and time
Answer:
yes we do not sure if this helps but yes
Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.
So basically there shall be no slavery within the US, and if there is it will be prosecuted.
Poitier was also the first black actor to win a prestigious international film award. With his unique career, Sidney Poitier helped change many stubborn racial attitudes that had persisted in this country for centuries. He has built the bridges and opened the doors for countless artists in succeeding generations.