Black Americans is the answer. As their employment / career opportunities increased across the society, the number of them wanting to Box or be Jazz musicians decreased. There have probably been many potentially as good as Ali, Louis and Marciano etc ... they are just working in cooperate America. Or maybe in the NBA, NFL or MLB. All a lot easier than boxing or trying to earn a living in Jazz.Thanks roc for an alternate yet just as true statement as the explanations I tried to bring forward
Other groups, Irish, Jews, Italians etc... traveled the same journey.
I disagree. Some folks ( ne'er-do-wells ), will ALWAYS be on the journey, no matter what the situation is. Including a lot of white folks.
I agree true indeed. Always has, is , and will be the lazy ones.