Answer:
Institutionalization of Jim Crowe laws and increased availability of manufacturing jobs.
Explanation:
After the return to power of white democratic leaders in the South during late XIX century, local government encated laws to limit the political participation of African-Americans and also to segregate them. At the same time, Northern and Western states opened a number of job positions, specially in the steelmaker industry, where this population saw a new opportunity to leave behind discrimination in the South.
Constantinople (now Istanbul)
Jazz age was considered to be a golden period when peoples love for music underwent a dramatic change and they sought to jazz music. The period of 1920 was so popular because the jazz music fascinated the youth of America and it was called ‘Roaring Twenties’.
Post world War One people sought to Jazz music which served to be the common preference for both Americans and Africans.
Despite this connection, there was segregation based on their color and creed. African Americans were the first to establish such culture while singing when they were slaves.