Final answer:
The South passed discriminatory laws and practices, such as Jim Crow laws, to prevent African Americans and some whites from experiencing economic equality.
Step-by-step explanation:
The efforts passed by the South to keep African Americans and some whites from experiencing economic equality included the passing of discriminatory laws and practices such as Jim Crow laws. These laws required the separation of races in all aspects of life and resulted in inferior facilities for African Americans. The United States Supreme Court also established the principle of separate but equal, which allowed segregation to continue. These efforts hindered economic opportunities and perpetuated inequality for African Americans.