How did literacy tests or education qualifications undermine the civil rights granted to African Americans by the 15th Amendment?

How did the roaring 20s mark the end of the progressive era? a. mass production reduced wealth disparity and turned public opinion pro business b. labor unions won big legislative gains in workers rights and disbanded c. public officials cut taxes on businesses and reduced spending on services d. america increasing influence in world affairs redirected public attention to foreign policy

Explain urbanization and industrialization enabled the dramatic change in american culture?

What kind of non military support did u.s give to europe