George Washington Julian wrote the fifteenth amendment of the United States of America. In his amendment, he gave voting rights even to African Americans.
The 15th amendment was ratified on February 3, 1870. This amendment did not fully guarantee the African-Americans to vote until the Voting Rights Act of 1965.
The Voting Rights Act of 1965 was designed to protect the voting rights of disenfranchised citizens, particularly African-Americans in the South, as outlined in the 15th Amendment. It is one of the most important pieces of legislation passed during the civil rights era.
When the 15th amendment was ratified, it gave African Americans men the legal right to vote as a United States citizen. The southern states fought against allow the men to vote until the Voting Rights Act was put into place.
All women got the right to vote in 1920, over 130 years after the Framers signed the Constitution. The Amendment that gave them that right was the 19th Amendment.