Final answer:
African Americans responded to segregation with the creation of self-sufficient communities, boycotts and consumer protests, and migration to the North seeking better opportunities and legal challenges against discrimination.
Step-by-step explanation:
African Americans responded to the post-Civil War imposition of segregation in the South with a variety of strategies. One such response was the development of self-sufficient black communities, with their own stores, schools, and churches where African Americans could be treated with dignity and respect. Examples of these institutions included all-black high schools with highly educated faculty.
Another response was the use of boycotts and consumer protests to challenge segregation and discrimination, especially during World War II when the African American community experienced increased consumer prosperity. These protests targeted businesses that refused to hire black workers and demanded an end to discrimination against black customers.
Lastly, African Americans sought to escape discrimination by migrating northward, although they encountered de facto discrimination in the North. This migration was part of a broader effort to seek better employment opportunities and to challenge segregation through legal means, civil rights activism, and more.