You need to read some more history. Just a little more. Get past the 1740’s.
No. It’s *you* who needs to need history. Massachusetts had no laws passed by the legislature to outlaw slavery.
You’re from Massachusetts. Do some genealogy. Learn about the white people who were put into slavery because they couldn’t support themselves or their families. They were put up for auction in their towns and were put into slavery. Yes, whites. Learn about the slaves that were sold in Quincy Market. There were zero laws passed by the legislatures to outlaw slavery in Boston.