[treedy]

Open borders will never happen, because it would bankrupt rich countries (sadly, it appears that the recent wave of African refugees in the Med are heading for Northern European welfare states for this reason). Also, there are many people who lack the aptitude and desire to leave their first-world home countries-they will simply be out-competed by migrants (most third world migrants who open little shops tend to employ people from the home country rather than locals).

There are ways to help poor third world countries: 1) focus on ameliorating eradicating the worst forms of preventable suffering. Bill Gates is doing this. Improve childhood nutrition to reduce stunting. 2) Trade with them. While Europe and the U.S. were bailing out their banks, South African corporations have been getting rich selling satellite TV, cellphone services and introducing chain supermarkets to Africans. You see, they want the same things that the rest of us have. Invest in their countries and make a profit. That will help them in the medium-long term.