Peregrinator wrote:
Highlander wrote:
Just once, and, arguably, unconstitutionally, during the American Civil War. West Virginia -- the pro-Union counties of Virginia-- in effect, seceded, from the state of Virginia. There were other divisions at other times, but these were of territories that then, through Constitutional means, became States.
Vermont seceded from the State of New York in 1777 and was admitted to the Union in 1791
Kentucky was formed from the State of Virginia and admitted to the Union in 1792
Maine was formed from the State of Massachusetts and admitted to the Union in 1820
There was no US when VT "seceded" from NY. In addition, there was some question whether VT was rightly part of NH or was an independent nation. But, more or less, yes. NY disputed VT statehood, but it was resolved and NY consented.
KY separated from VA, with consent.
ME separated from MA, with consent.
Only WV, under the provisions of Article IV, Section 3 of the Constitution, left another State -- seceded -- without the consent of said State, VA. There were political machinations associated with the secession, based upon what was, in effect, a Virginia government in exile, self-proclaimed, as 'twere..