What factor(s) in the US south led to the Great Migration of almost 6 million African-Americans to the Mid-West and North during the early to mid 20th Century?

The Great Migration of nearly 6 million African Americans from the South to the North and Midwest was primarily driven by the search for better economic opportunities and the desire to escape systemic racism and oppressive Jim Crow laws in the South. Industrial jobs in northern cities, especially during World War I and II, attracted many seeking higher wages and improved living conditions. Additionally, widespread violence and disenfranchisement in the South propelled families to seek safety and a more equitable life elsewhere.