Right. Pre WW2, the intelligent, skilled segment of the black population left the rural areas and went to seek jobs in the cities. There was no welfare in the early days, so if you didn't have what it took to make a go of it, you stayed where you were.
What changed after WW2?
A few years ago every black MBA student at Harvard was an African immigrant; despite having a much, much smaller pool to draw from, they outscored all “African-Americans”. That’s culture.
Right. What segment of Africa would migrate here (before we started mass immigration of "refugees" from places like Somalia?) The worst, or the best? The Harvard MBAs didn't come from a small pool, they were from a big pool (Africa) from which the best were enabled by their extended families to come here to get educated.
Yeah. That’s why Americans are different. For the most part, our ancestors self-selected from their source populations. We got the malcontents, the dreamers and the ones with enough wanderlust/spirit of adventure to pack up and leave everything they knew to try to make a go of it in a strange and potentially lethal new land.
The one group that didn’t come here voluntarily just wasn’t self-selected for gumption.