Which of these events most directly resulted in expanded protections for the civil rights of african americans in the south?
a. the election of ulysses s. grant in 1868
b. the passage of the wade-davis bill in 1864
c. the impeachment of andrew johnson in 1868
d. the ratification of the fifteenth amendment in 1870

explanation:

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the  equal rights amendment  (era) states: "equality  of  rights  under the law shall not be denied or abridged by the united states or by any state on account of sex." congress first introduced the era in 1923, but the campaign for ratification took off in the 1960s during the  civil rightsmovement.