Answer :
A citizen's right to vote cannot be restricted or denied by the federal government or any state "on account of race, color, or past condition of servitude," according to the Fifteenth Amendment (Amendment XV) of the United States Constitution. It was the third and last Reconstruction Amendment to be approved, taking place on February 3, 1870.
Congress addressed the rights of the millions of freed black slaves on several occasions throughout the American Civil War's closing years and the Reconstruction Era that followed. By 1869, amendments had been approved to end slavery, provide citizenship, and guarantee equal protection under the law, but when Ulysses S. Grant was elected president in 1868, many Republicans came to believe that preserving the voting rights of black men was crucial for the party's survival.
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