If every condition of that idiotic screed was met in 1966, it would have taken no more than five years before the “black community” in the U.S. was no better off than in Africa.
Probably, though only those members of the black community moving to the new Nation of Islam.
I think Muhammed Farms is still there, run by the Nation of Islam Ministry of Agriculture. Their home page doesn't look to have been updated in over a decade, the price list since 2006, so maybe not. Best way to find out would be to check agricultural subsidies, they were still getting them in 2014. Need 41 million acres to feed your people, no one gives it to you so you buy 4,500. Cultivate 1,500, thirty years later still cultivating 1,500. Economic progress on a scale that wouldn't need 5 years to fail.