Answer:
Jim Crow Laws.
Step-by-step explanation:
The Jim Crow Laws was a system named for racial segregation in the United States. The racial caste system was the system that legalized racial segregation in public spaces. The laws took away the rights of African Americans to vote, education, job opportunities, etc.
Therefore, it was Jim Crow Laws that limited the overall lives of African Americans in the United States. Thus option C is correct.