delegates accepted Virginia's terms of separation, and a state constitution was drafted at the final convention in April 1792. The Virginia General Assembly adopted legislation on December 18, 1789, separating its "District of Kentucky" from the rest of the State and approving its statehood. Kentucky became the 15th state in the Union on June 1, 1792. West Virginia: Tensions within Virginia had been building; the western counties felt ignored and uncared for by the Richmond government. This broke into open rebellion after Virginia voted to secede from the Union. Several Trans–Allegheny region counties voted to secede from the state after Virginia joined the Confederate States of America at the beginning of the Civil War on April 17, 1861. Unionist leaders in Wheeling set up a new State government for Virginia under the Wheeling Convention that was recognized by the U.S. Government in Washington. On May 13, 1862, the General Assembly of the Restored Government of Virginia passed an act granting permission for creation of West Virginia, and the secessionist area wrote a constitution. It was admitted to the Union as West Virginia on June 20, 1863, the 35th state. Support for the Confederacy and the Union was about evenly divided in the new State and a guerrilla war lasted until 1865. 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 necessary to become a separate state. Northern Virginia: Given the difference between Northern Virginia (NoVa) and the rest of Virginia (RoVa), some have proposed separating the two parts of the Commonwealth. Washington Present-day Washington is geographically divided into Eastern and Western regions by the Cascade Mountains. In the original proposal to establish Washington Territory, it was bounded on the east by the Columbia River. Since 1861, some eastern residents have proposed forming a new state, sometimes in combination with the Idaho Panhandle and relatively small parts of Montana and Oregon (consisting of the greater market area of Spokane). Names proposed include East Washington, Lincoln, and Cascadia (a name sometimes applied to the Pacific Northwest region as a whole). Reasons given are the distinct needs of urban and rural populations and political differences over water rights, labor law, and taxation. In 2015, a bill was introduced in the Washington House of Representatives to create a task force for studying the impacts of adjusting the boundary