How did the massachusetts government act change the way massachusetts was governed?

The act effectively abrogated the Massachusetts Charter of 1691 of the Province of Massachusetts Bay, and gave its royally-appointed governor wide-ranging power

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`stare decisis is a legal doctrine that obligates courts to follow historical cases when making a ruling on a similar current or future case. stare decisis ensures that cases with identical facts be approached in the same way, unless overruled by the same court or a higher court such as the us supreme court. simply put, it binds courts to follow legal precedents set by previous decisions.

stare decisis is a latin term meaning "to stand by that which is decided".