There have been thousands upon thousands of people who invested their lives and fortunes trying to make a future in Africa. They bore the economic brunt of developing wheat strains that did not die off from "rust" or tended sheep through epidemics of nose worms, dug wells or went belly up due to drought, endured war, being kicked out or divested of financial interests by unstable governments, etc in adfinitum. When they finally broke even (though many went belly up or died) along comes someone to guilt trip them as an exploiter. In the Belgian Congo--given its faults--there was a 500$ franc fine for calling a black a N*g*er. There was new housing. Hospitals and missionaries--people died so often west Africa was called the white man's graveyard. Oh, the horror! Diseases cured or treated, women given dignity, including the right to be educated, the little man protected from tyrants, intertribal wars stopped, PAC of problem animals destroying crops. Wow should we feel so, so guilty....except the Muslim slavers never felt guilty. Victorious tribes never felt guilty for destroying weaker ones. We have got to get over the phony guilt trip (and stop people like the "rev" Jesse Jackson from shaking down businesses etc., or anyone like him making appeals to guilt from Africa)
Did colonialism have some pros--you are in many ways standing on their shoulders today!