Which state saw its own constitution's claim that all men are "free and equal" used by Quock Walker and Mum Bett to win their freedom from slavery?

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Massachusetts saw its own constitution's claim that all men are "free and equal" used by Quock Walker and Mum Bett (Elizabeth Freeman) to win their freedom from slavery. These landmark cases in the late 18th century helped set the precedent for the abolition of slavery in the state.

Which State Saw Its Own Constitution's Claim That All Men