Question

despite the passage of the civil rights act of 1875, southern states implemented jim crow laws, which were designed to uphold the fifteenth amendment. abolish the \separate but equal\ doctrine. support the plessy v. ferguson decision. prevent african americans from gaining equality.

Explanation:

Jim Crow laws were racial segregation laws in the Southern US. The Fifteenth Amendment granted African American men the right to vote, and Jim Crow laws aimed to restrict African Americans' rights, so they didn't uphold it (eliminating the first option). The "separate but equal" doctrine was upheld by Plessy v. Ferguson, but Jim Crow laws were designed to enforce segregation and inequality, not to abolish that doctrine (the second option is wrong as they enforced it, not abolish). Supporting Plessy v. Ferguson was a result, but the primary design of Jim Crow laws was to prevent African Americans from achieving equality (the fourth option is correct; the third option is about a result, not the design purpose).

Answer:

D. prevent African Americans from gaining equality. (Note: Since the original options didn't have letter labels, but based on the four options, the fourth one is the correct answer. If we assume labels A - D for the four options from left to right, the correct one is D. prevent African Americans from gaining equality.)