[Lammy]

> but there is absolutely no general consensus for the exact causes

Yeah, in such a complicated system there are so many parties involved that trying to break down one cause seems like an impossibility. All one can do is look at effects and try to speculate backwards from there to see whose incentives may have aligned and who might benefit from the outcomes we got. Maybe nobody, since accidents happen, but in the case of the Great Depression I think it's very interesting to learn how the 1929 stock market crash stemmed the tide of people leaving the south for better-paying industrial jobs in the northeast cities: https://en.wikipedia.org/wiki/Great_Migration_(African_Ameri...

"Between 1910 and 1930, the African-American population increased by about forty percent in Northern states as a result of the migration, mostly in the major cities. The cities of Philadelphia, Detroit, Chicago, Cleveland, Baltimore, and New York City had some of the biggest increases in the early part of the twentieth century. Tens of thousands of blacks were recruited for industrial jobs, such as positions related to the expansion of the Pennsylvania Railroad."