The elimination of the poll tax in elections was most effective in reducing economic inequalities during the 1960s.
Prior to the elimination of poll tax by Voting Act 1965, the southern states leaders uses poll tax to discourage the African-American from voting and having fair effect in elelction.
Hence, this elimination of the poll tax in elections was most effective in reducing economic inequalities in the 1960s.
Therefore,, the Option C is correct.
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