Final answer:
During WWI, African Americans migrated to northern cities to seek jobs in war factories in what is known as the Great Migration.
Step-by-step explanation:
During WWI, African Americans began to migrate to northern cities to seek jobs in war factories. This movement, known as the Great Migration, saw nearly 350,000 African Americans leaving the post-Civil War South for opportunities in northern urban areas. They found work in industries such as steel, mining, shipbuilding, and automotive, while African American women sought employment opportunities beyond domestic service roles. By 1920, over 100,000 women had found work in diverse manufacturing industries.