<Li> Maine was a part of Massachusetts until it was admitted as a new state in 1820 after the legislature of Massachusetts consented in 1819 . </Li> <Li> West Virginia was a part of Virginia until it was admitted as a new state in 1863 after the General Assembly of the Restored Government of Virginia consented in 1862 . The question of whether the legislature of Virginia consented is controversial, as Virginia was one of the Confederate states . However, antisecessionist Virginians formed a government in exile, which was recognized by the United States and approved the state's partition . Later, by its ruling in Virginia v. West Virginia (1871), the Supreme Court implicitly affirmed that the breakaway Virginia counties did have the proper consents required to become a separate state . </Li> <P> Many proposals to partition U.S. states have been unsuccessful . </P> <P> The late 20th and early 21st centuries have seen examples of local and state secession movements . All such movements to create new states have failed . The formation in 1971 of the Libertarian Party and its national platform affirmed the right of states to secede on three vital principles: "We shall support recognition of the right to secede . Political units or areas which do secede should be recognized by the United States as independent political entities where: (1) secession is supported by a majority within the political unit, (2) the majority does not attempt suppression of the dissenting minority, and (3) the government of the new entity is at least as compatible with human freedom as that from which it seceded ." </P>

Many states admitted to the united states were first areas called quizlet