Where in the world does slavery still occur at the largest scale?

in Sri Lanka
in Colombia
in Mauritania
in Saudi Arabia
Today up to 600,000 Mauritanians, or 20% of the population, are still enslaved, mainly the "black Moors" of Haratin people. Though legally abolished in 1981, slavery did not become a crime until 2007, and since then only one person has been prosecuted for owning slaves. The issue of slavery is still powerful theme in the country's political debate.
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Hitter smasher
reach: rather globalAfricaculturegeographygeography of Africageography of West Africahuman rightsMauritaniashocking worldslaveryWest Africa
Illustration: joxin