On March 7, 1644, Massachusetts established the first two-chamber legislature in the American colonies. One hundred thirty years later, to the day, British forces closed the port of Boston to all commerce. By: Redactor Slavery and Anti-Slavery in America Lana Peters & others Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website × 5 = Notify me of follow-up comments by email. Notify me of new posts by email.