Very few people know that the Constitutional Convention of 1787 only the last of nearly 20 other conventions in which American colonies, and later states, met to deliberate on specified problems.
In these gatherings, states met as semi-sovereigns; these were essentially diplomatic meetings. The rule for decision was “one state, one vote.”
Those conventions were the model for the “convention for proposing amendments” in Article V of the Constitution.
I have just finished a paper that appears to be the first historical account of the entire series of inter-colonial and interstate conventions. It is called Founding-Era Conventions and the Meaning of the Constitution’s “Convention for Proposing Amendments.” I have posted it on the website of the Social Science Research Network where you can read and download it if you are so inclined.Details