Right of Self Determination

[Chex]

Four states have been established from existing states: Kentucky (from Virginia), Maine (from Massachusetts), Vermont (from New Hampshire and New York), and West Virginia (from Virginia). National ReviewSlate

"We really feel in northern and northeastern Colorado that we are ignored -- citizens' concerns are ignored, and we truly feel disenfranchised," Weld County Commissioner Sean Conway said.

Conway said the new laws don't support the interests of the northern part of the state, which is rich in agricultural history. Conway said that's why he and others are proposing to break away from Colorado to form a new state.

Secede 1.withdraw formally: to make a formal withdrawal of membership from an organization, state, or alliance.

SECEDE: to withdraw from an organization (as a religious communion or political party or federation)

[Treefarmer]

Four states have been established from existing states: Kentucky (from Virginia), Maine (from Massachusetts), Vermont (from New Hampshire and New York), and West Virginia (from Virginia).
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Don't forget Tennessee, which was formed from North Carolina territory, as well as a part of Virginia, and of course "Indian Lands".