Sorry Tat but I don't think there was anything "natural" about the abhorant tatics that were used to create bigger and stronger slaves throughout the Americas but that statement will inevitablly turn this into an ethical debate. One which has traversed many times and never lead to anything positive so I digress.
The biggest black slaves were captured and sold to farmers
the new slave owners had the biggest most elite genetics of african tribes to breed with the black women slaves
Imagine walking into a big room of 100 slaves for sale and saying ok everyone man 6'4 stand up all the women that are 5'9 stand up
everyone else leave .
Looking over the men you pick the largest most muscular guys
you look at the women with the best legs and most muscle
you purchase them and off to the farm to breed
Thats how slaves were picked just like a farmer goes to the market buys the biggest nicest looking bull he can and the best looking cows for him to hump to make nice looking babies
got to remeber these salves were captured put on boats the ones that got sick were pushed overboard then ones that made the journey had to have good immune systems and be genetically superior to the others to survive
" only the strong survive " Imagine being worked ,whipped beaten,
shackled you were strong or you were killed.
When women gave birth to new slaves if they were not strong workers and could handle the lashing and beating they would die
the black men today that are the relatives of former slaves have some very strong bloodlines