Isn't that what decolonialization was all about? I find your point of view rather insulting, implying that big white saviour must come and what? Build functioning society from outside? Impose "correct" government? Maybe send waves of missionaries to teach them how to live?
Most of Africa is not able to trade freely with EU, creating a favorable economic situation for the EU. I'm not sure the milk example is a good one, but historically (post-colonialism) most value gained from mining in Africa has been gained by companies in the EU -- not much value gained for the African countries and citizens. This is due to the lopsided trade agreements but also corporate exploitation of the African countries.
The African countries needs our help in the form of proper free-trade agreements, and in the form of us not meddling with their natural resources.
Source: https://en.wikipedia.org/wiki/List_of_bilateral_free-trade_a...
Simply letting advanced industries compete with local farmers isn't going to work out. In Europe, twelve people can run six farms with hundreds of cows each. In Africa twelve people work with two cows. In addition, European farmers receive subsidies, so that they work with lower cost and can compete with Chinese factories.
I am not sure how much African politicians can do alone about such dynamics. And as the migration problem shows us, we have shared interests here.
They start in position at the bottom of the economic food chain and work their way up, acquiring know-how and finding their place in the world. Charity is not necessary and probably harmful.
When exactly did the Chinese drowned by the thousands in the ocean just to migrate from their home country? And how is that period related to the latest success of their economy?