I mean that the wealth of the western countries comes from natural resources they didn't have. They had some and after that they started to build colonies. Maybe the most clear example is British expansion in India. Anyhow, after the colonies stopped working, the capitalism replaced it and the big companies are still making money by producing cheap products in countries that don't care about human rights or environmentalism as much as we do. You know, like Nikes made in sweat shops by child labor.
I must admit that I don't know as much as I would like about this subject, but it seems obvious that the British could not be as rich as they are if they had not benefited from the poor countries' valuable resources.