While the formation of New Afrika wasn't really inevitable, it's survival also wasn't really certain up until the 90s. After Martin Luther King Jr. died after being assassinated and following lots of violence in the Deep South along the Black Belt, more radical groups that eventually formed the Republic seized the mantle from King and the whole black rights movement eventually went from being nonviolent and supporting civil rights to becoming a rather radicalized group. Remembering stories from my father who actually served in the National Guard in Alabama before he moved up north to Virginia, riots, bombings and other activities would be pretty common throughout the South. Response from the US government, which was more or less, "law and order" campaigns did not help at all. I think the growing divide between white and black America may have been averted if King hadn't been assassinated the way he was. From on then it was total breakdown of public order until in the 80s when the Republic was officially founded with US tacit approval, settling all the issues of constitutionality and law later. Maybe I'm really wrong. We got Robert F. Williams, President of New Afrika with the William-McGovern Agreement in 1981. At least, that's what I remember? Maybe someone can correct me.
If New Afrika hadn't ever been founded as a movement at all, I see the black rights movement fizzling out eventually. Of course, we'd get equality achieved in time, but I don't think it would happen so fast. Perhaps in the 2000s or 90s with bombings and shootings still often and the US not effectively governing entire cities. At least we could avoid the thousands of dead people that occurred. If New Afrika hadn't been officially established in 1981, I'm sure we would still hear of some riots and shootings in the South in daily news, although we'd be rather numbed by it, plus, I think the movement would downscale. Many people nowdays claim that McGovern made a big mistake, because some people believed the whole movement was winding down and that eventually they would accept the offers from more unitary-oriented politicians that promised and would enforce civil rights, but no New Afrika. I do think the movement was winding down to accept the compromise by some political leaders, but I really doubt it would have simply disappeared as others claim.