Following a declaration of independence from both Britain and New York, as the state of New Connecticut, the people of the Grant lands received advice that they would need a constitution in order to receive admission into the United States (which they achieved in 1791 when Vermont became the fourteenth state of the U.S.A). The Constitution was drafted and ratified at a tavern owned by one Elijah West in the town of Windsor.
The Constitution of the – now renamed – Republic of Vermont comprised nineteen articles that guaranteed the basic political and civil rights of its citizens. It was based on the radical democratic Constitution of Pennsylvania, including articles giving voting rights to all freemen, requiring the provision for free education and abolishing slavery – making Vermont the first North American state to make slavery illegal.
The full text of the 1777 Constitution is available at the Vermont State Archives and Records Administration site.