[reg45]

New Hampshire was separate from Massachusetts prior to the implementation of the 1787 Constitution and therefore joined the union as a separate state - one of the original thirteen.

You may be thinking of Maine which was a part of Massachusetts until it seceded to form a new state in 1820. The state of Maine was admitted to the union as a part of the Missouri Compromise in order to balance the number of "slave" states and the number of "free" states.

[manc]

thank you for that information