Final answer:
The Jim Crow South functioned as a caste system through racial segregation and discriminatory laws.
Step-by-step explanation:
The Jim Crow South functioned as a caste system by enforcing racial segregation and maintaining a hierarchy of power between white and black Americans. One specific example of this was the establishment of separate but unequal facilities for black and white people. For instance, public buildings, schools, parks, hospitals, and transportation were all segregated, with facilities for African Americans being inferior. Another example is the implementation of discriminatory laws that restricted where black and white individuals could live. These laws limited neighborhoods and created segregated spaces, perpetuating racial divisions and opportunities for social and economic advancement.