Sure did we brought maize to Africa that became the staple diet of many millions of Africans both white and black.
We brought sugar cane, tea and livestock, we turned vast areas of bush into agricultural land and food was produced, enough even to export.
We brought education, christianity, and our medicine, built schools and churshes and hospitals and universities and an ecconomy that had more than enough room to absorbe anyone who wished to progress.
We brought law and order to a savage land and a judicial system that always favoured the victim.
We did not bring racism to Africa what we did bring was racialism where the dutch kept to themselves and lived together as did the English, the Belgians, the coloureds, the Indians, the Zulus, iQhozas, Karrangas, The Cape Malay everybody lived in their own communities, with their own people, when you live in a multicultural society other people do things that are really offensive to others, as part of their cultural practice so isn't it better that these people have their own community where these practices are part of their daily life.
Without colonialism, Africans would still be slaves.