well, weighing in on the other side -- the English did stop slavery but they did import virtual slaves from southern India to work in Africa and Fiji and the Caribbean. However, I'm not very certain if they were forced in, or the Indians, sensing the business opportunity didn't go fo their own accord -- cyborg, with your vast knowledge, could you clarify please?)
Many people went in willingly, but it certainly wasn't business opportunities not in the beginning. Coolies,payolls,etc. were dirt poor Indians. In fact, I think it's a slur to say 'coolie' because of what it implied because you were working side by side cutting suger cane with the blacks and the white people (not Irish but Scots in this case). Many people who emigrated to the West Indies were very poor and didn't have much at home to begin with. I'd say what went on with King Leopold was more akin to virtual slavery, or the diamond mines in South Africa for instance.