were a challenge to

URI: https://gptkb.org/prop/were_a_challenge_to
4 triples
GPTKB property
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Subject Object
gptkb:Black_Codes American democracy
gptkb:debates_with_Stephen_A._Douglas Douglas's positions
gptkb:Jim_Crow_Laws American democracy
gptkb:Houdini's_escape_acts gptkb:law_enforcement