3. though the 15th amendment extended the right to vote to other citizens of the united states, what methods did some states use to restrict voting rights?

When poll taxes, literacy tests, "grandfather clauses," and "white primaries" did not stop blacks from registering and voting, intimidation often did the job. An African-American citizen attempting to exercise his right to vote would often be threatened with losing his job. So the poll tax, literary test, grandfather clause, the white primary, and intimidation/threats.

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