Jim Crow Segregation refers to a system of institutionalized racial segregation and discrimination enforced in the Southern United States from the late 19th century until the mid-20th century. This system created a legal framework that upheld racial inequality through laws, customs, and practices that discriminated against African Americans in all aspects of public life, including education, transportation, and voting rights. It is important to understand this term in the context of how it shaped the social and political landscape during significant events like World War I, where African Americans served in the military yet returned to a society still deeply entrenched in racial prejudice.