I read that the English tried using Irishmen as slaves in the West Indies but the Irish slaves could not stand the heat and died before the English got enough work out of them.
I read the English tried using Injuns as slaves in the Americas, but not only were they culturally unsuited to agricultural labor, it was considered unhealthy to be harboring captives when attacks from their prisoners’ tribes occurred.
Interesting. Seems I may have heard that before. Of course, African slavery in the northern colonies was attempted but the growing season was shorter, white owners couldn't find the right crops that would financially support a plantation, and African slaves didn't thrive in the colder climate.
They died of mosquito born diseases mainly malaria. Blacks with sickle cell are less vulnerable and lived longer but cost more than the Irish, scots and criminals who sold for the cost of shipment. White slaves were treated far worse because of their cheapness.