What region were slavery was most common

I believe that modern slavery is most prevalent in Africa, followed by the Asia and the Pacific region.

Although the largest percentages of slaves were found in the South, slavery did exist in the middle and Northern colonies.

Explanation:

on this day in 1913, henry ford installs the first moving assembly line for the mass production of an entire automobile. his innovation reduced the time it took to build a car from more than 12 hours to two hours and 30 minutes.