Does the Smithsonian ever mention that? Do any of the drone brain dead leftists at the Smithsonian even know that. I doubt it. They only know what their leftist professors told them.
What law did Massachusetts pass to end slavery?
My recollection is that liberal biased judges deliberately twisted some words in the newly created Massachusetts constitution to declare it abolished slavery, but this was just blatant lying.
Activist courts ended slavery in Massachusetts. Nobody passed any laws to do it.
And of course, the Massachusetts slave owners simply took them out of state and sold them.
Lots of fanfare for their activism, but didn't really do much for their declared cause.
“Pennsylvania and Massachusetts passed laws to end slavery in their states in 1780… before the revolution was over, 9 years before the Constitution went into effect, and over 50 years before the British outlawed it.”
Of the 13 original slave states, 13 of them voted to enshrine slavery into the United States Constitution in 1787. This includes Pennsylvania and Massachusetts.
In fairness, probably the only reason Pennsylvania and Massachusetts went along with giving slavery legal status in the Constitution was because it was in their own economic and political best self interest.