The following outline is provided as an overview of and topical guide to Tennessee:
Tennessee – U.S. state located in the Southeastern United States. Tennessee is the 36th most extensive and the 16th most populous of the 50 United States. Tennessee was admitted to the Union as the 16th state on June 1, 1796. Tennessee was the last state to leave the Union and join the Confederacy at the outbreak of the U.S. Civil War in 1861, and the first state to be readmitted to the Union at the end of the war. In the 20th century, Tennessee transitioned from an agrarian economy to a more diversified economy, aided at times by federal entities such as the Tennessee Valley Authority. Tennessee has played a critical role in the development of many forms of American popular music, including rock and roll, blues, country, and rockabilly.