One of the biggest lies we're told is that
"millions of slaves were brought from Africa."
The truth is that the slave breeding industry
is what created more slaves.
A great book on that subject is "The America
Slave Coast" by Ned and Constance Sublette.
Actually I highly recommend that book.
(It's probably much more advanced reading than
a 3 yr old can handle tho lol, but do tell them
the truth you find it.)
Btw, here's a quote from the beloved American,
Thomas Jefferson in reference to slavery.

"I know of no error more consuming to an estate
than stocking farms with men almost exclusively.
I consider a woman who brings a child every
two years as more profitable than the best man
of the farm. What she produces is an addition to
the capital, while his labors disappear in mere
consumption."

Please note that he uses the word "stock" there
as if to reference livestock.