So the American colonials were mistaken to think they were subject to British law? ... Because they "were not in Great Britain"?
It's called "empire" for a reason.
The colonies were separate political entities. Regardless, her biggest point was 100 percent true. The nexus of black slavery was black slavers. How many American blacks know that? And how would that change their current victimhood perspective? The Woman King, the latest woke black movie, is as near a total lie about African history as is possible. Choose your battles.