Sexual slavery and human trafficking is a worldwide problem. It's not legal in the Philippines, or India, or Los Angeles, or China, or Cambodia, or Eastern Europe. Brick-making slavery isn't legal in India.
The boy soldiers of African are forced to serve. Do we count that as legal slavery?
We have caste slavery in India and Nepal, and slave migrant workers in Indonesia.
Slavery exists in some form in every country.
There have been more slaves through out history that were not of african descent. Just an avenue for special status.