The greatest number of drug addicts are to be found in Teheran and in Karachi, not in the West. Not in New York believe it or not. It's the same with the roles of slavery, racism and imperialism in the world. These institutions were present in other cultures. However, it was Western civilization which did something about slavery, about racism and voluntarily dissolved its empires leaving behind a very positive legacy of institutions not to mention buildings and roadways.