Final answer:
The Fifteenth Amendment excluded women from suffrage, leading to disappointment among women's rights activists. The women's rights movement split into factions but continued to fight for suffrage. The Nineteenth Amendment granted women the right to vote in 1920.
Step-by-step explanation:
The Fifteenth Amendment had a complex effect on the women's rights movement. While the amendment granted voting rights to African-American men, it excluded women from suffrage. This exclusion deeply disappointed leading women's rights activists such as Susan B. Anthony and Elizabeth Cady Stanton. As a result, the women's rights movement split into two factions: the National Woman Suffrage Association (NWSA), led by Stanton and Anthony, and the American Woman Suffrage Association (AWSA), which supported the Fifteenth Amendment.
Despite this setback, the women's rights movement continued to rally for suffrage. Activists like Mary Ann Shadd Cary and Susan B. Anthony argued for women's voting rights based on the principles of equality outlined in the Fourteenth Amendment. The movement also faced challenges in other areas of women's rights, including employment, education, and reproductive rights. However, the Nineteenth Amendment eventually granted women the right to vote in 1920, marking a significant victory for the women's rights movement.