Who called for a revival of the abolitionist spirit when he joined the Niagara Movement?

William English Walling called for a revival of the abolitionist spirit in connection with the Niagara Movement. The movement, founded by Black civil rights activists including W. E. B. Du Bois, sought full political and civil rights; Walling’s appeal helped build support for that cause. The correct choice is William English Walling.

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