The Global Slavery Index publishes a report each year with information on modern slavery, which applies to various factors that make people vulnerable like forced labour, human trafficking, etc.., as well as government responses and products in the global supply chains that are at risk of being produced by modern slavery. I've uploaded the 2018 findings and generated some simple plots using plotly.
Quite a shocking map, but how about the prevalance of modern slavery in each country, relative to their populations?
Why do we still have slavery in 2019!!!??