The 15th Amendment to the United States Constitution was ratified on February 3, 1870. It granted African American men the right to vote. This was a significant milestone in Black history as it marked a major step towards equality and enfranchisement for Black Americans. The amendment stated that the right to vote could not be denied based on race, color, or previous condition of servitude.

However, despite the passage of the 15th Amendment, many obstacles such as literacy tests, poll taxes, and violent intimidation were used to prevent Black people from exercising their right to vote in the following decades. It wasn't until the Voting Rights Act of 1965 that many of these barriers were finally dismantled, ensuring greater access to the ballot for African Americans.

Overall, the 15th Amendment was a crucial moment in the fight for civil rights and equality for Black Americans, and its legacy continues to shape the ongoing struggle for voting rights and racial justice in the United States.