Capitalism is different form imperialism, capitalism is the belief that our government should provide life, liberty and the freedom to achieve happiness to all citizens with minimal regulations in the economy; letting the "invisible hand" control the economy. I'm fine with your belief, but realize that what you show here isn't capitalism. Capitalism is an economic ideology that holds tradition and free economy as cornerstones to a country but what you show here is imperialism and that doesn't take place anymore (or at least not to the extent you show here). Canada (my home land) actually spends over a million dollars a year to aid 3rd world countries. Lastly I have to say that most of the problems in Africa are from civil wars and famine, not 1st world countries. Eliminating capitalism will not remove the problems in Africa. Like in most things the solutions is a great deal more complex then that.
I do support right-wing ideals but I am a welfare capitalist which is slightly right of centre.