The Corsairs and Barbary pirates were raiding Europe for slaves in the 1500s so she’s technically correct.
Using that figure we’re talking about 365 years. Of course
you are touching on European slaves in part, rather than
African slaves. She’d probably be happy to include those
years as long as nobody raised your point.
One could use the 1619 figure and that would equate to 246
years.
But if we focus on the U. S. involvement, we’re talking
about 1776 to 1865, which was around 89 years.
It doesn’t make it any less impactful for African slaves,
but the last figure is the one that the U. S. should be
accountable for.
Actually there was a 1400 year period that white Europeans were enslaved by Muslims from about the 600 AD period on into the early 20th century. Let’s discuss that, shall we?