Slavery’s last stronghold

Is this really the 'last stronghold' of slavery, or is it the last place where slavery isn't hidden away from prying eyes and is somewhat accepted.

From what I understand human trafficking and slavery are alive and well.

Given how many countries and cultures allow women to be treated as property and owned with little recourse it's hard to say this is the last stronghold of slavery. We just prefer not to raise this too often, as it's often the result of religious rules.

We crossed Mauritania when Aziz was running for presidency (the guy who overthrew the democratically elected government) and never even heard of the notion. Amazing article. Thanks CNN