What general principle was established with the Plessy v. Ferguson Supreme Court decision?(1 point) Responses States could require separate facilities for African Americans as long as the facilities were equal. States could require separate facilities for African Americans as long as the facilities were equal. States could not use poll taxes and literacy tests to establish voting eligibility. States could not use poll taxes and literacy tests to establish voting eligibility. States could not prevent African Americans from voting. States could not prevent African Americans from voting. States could be punished with decreased congressional representation if they did not allow African Americans to vote.