(Thomson Reuters Foundation) – Nearly 36 million people around the world are enslaved, forced to do manual labour in factories, mines and farms, sold for sex in brothels, trapped in debt bondage and born into servitude, a global index on modern slavery showed on Monday. Qatar, Democratic Republic of Congo, Sudan, Syria and Central African Republic rose up the rankings to enter the top 10 countries with the highest prevalence of slavery in the 2014 Global Slavery Index, the second annual survey of its kind.