African americans were allowed to vote in the united states when a. abraham lincoln was elected president in 1860. b. congress passed the fifteenth amendment. c. lincoln issued the emancipation proclamation. d. congress declared southern voter eligibility laws illegal.

African Americans were allowed to vote in the United States when A. Abraham Lincoln was elected president in 1860. B. Congress passed the Fifteenth Amendment. C. Lincoln issued the Emancipation Proclamation. D. Congress declared Southern voter eligibility laws illegal.

Explanation:

The Fifteenth Amendment to the Constitution of the United States, states that governments in the United States cannot prevent a citizen from voting because of their race, color, or previous condition of servitude (slavery).

The answer is: B. Congress passed the Fifteenth Amendment.

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