Why can't south American and African countries be as wealthy like Europe, U.S. and East Asia?

I don't think the border wall is going to do anything, illegals will find other ways to get in the country. Also, because we have cheap labor, if every illegal person was deported, there would be certain things like in construction jobs, service jobs, farming laborers, etc etc, will impact our economy and most... show more I don't think the border wall is going to do anything, illegals will find other ways to get in the country. Also, because we have cheap labor, if every illegal person was deported, there would be certain things like in construction jobs, service jobs, farming laborers, etc etc, will impact our economy and most Americans will notice a lot of American goods going up which could slow our economy down. South American and African countries just needs to have organizations, businesses, government help to get their economy strong, that's the only way.
Update: The Mortal Mortuary, yes there are places in Africa like Congo where people are driving expensive cars, that's all good and everything, but neighboring countries are so behind that poverty and crime seems so normal.
Update 2: rick29148, did you know that Japan doesn't have natural resources like the U.S. (they buy from other countries) and yet they have 2nd strongest economy.
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