prize17-3, Exercise 1: The Great Migration and jazz

Model answer (check the details):

The Great Migration (about 1916 to 1970) moved millions of Black Americans from the rural South to Northern cities such as Chicago. It affected jazz in two main ways. First, it brought musicians to cities with more work, better pay and clubs that stayed open late. Second, it created large Black audiences in those cities, so bands could make a living and record companies had a market.

It is a better explanation than the one-district story because it rests on a large, documented movement of people with its own economic and social causes, and it does not depend on one event in one place. The district's closing is documented, but there is little evidence that it alone moved the music.

Care: the numbers vary between sources (the national total is about six million). Quote them as estimates.