Tennessee ( , locally ), officially the State of Tennessee, is a landlocked state in the Southeastern region of the United States. It borders Kentucky to the north, Virginia to the northeast, North Carolina to the east, Georgia, Alabama, and Mississippi to the south, Arkansas to the southwest, and Missouri to the northwest. Tennessee is the 36th-largest by area and the 15th-most populous of the 50 states. According to the United States Census Bureau, the state's estimated population as of 2024 is 7.22 million.
Tennessee is geographically, culturally, and legally divided into three Grand Divisions of East, Middle, and West Tennessee. Nashville is the state's capital and most populous city, and anchors its largest metropolitan area. Tennessee has diverse terrain and landforms, and from east to west, contains a mix of cultural features characteristic of Appalachia, the Upland South, and the Deep South. The Blue Ridge Mountains along the eastern border reach some of the highest elevations in eastern North America, and the Cumberland Plateau contains many scenic valleys and waterfalls. The central part of the state is marked by cavernous bedrock and irregular rolling hills, and level, fertile plains define West Tennessee. The state is twice bisected by the Tennessee River, and the Mississippi River forms its western border. The Great Smoky Mountains National Park, the nation's most visited national park, is in eastern Tennessee.
Tennessee is rooted in the Watauga Association, a 1772 frontier pact generally regarded as the first constitutional government west of the Appalachian Mountains. Its name derives from Tanasi (ᏔᎾᏏ), a Cherokee town preceding the first European American settlement. Tennessee was initially part of North Carolina, and later the Southwest Territory, before its admission to the Union as the 16th state on June 1, 1796. It earned the nickname "The Volunteer State" due to a strong tradition of military service. A slave state until the American Civil War, Tennessee was politically divided, with most of its western and middle parts supporting the Confederacy, and most of the eastern region harboring pro-Union sentiment. As a result, Tennessee was the last state to officially secede from the Union and join the Confederacy, and the first former Confederate state readmitted to the Union after the war had ended during the Reconstruction era.
During the 20th century, Tennessee transitioned from a predominantly agrarian society to a more diversified economy. This was aided in part by massive federal investment in the Tennessee Valley Authority (TVA) and the city of Oak Ridge, which was established during World War II to house the Manhattan Project's uranium enrichment facilities for the construction of the world's first atomic bombs. After the war, the Oak Ridge National Laboratory became a key center of scientific research. The state's economy is dominated by the health care, music, finance, automotive, chemical, electronics, and tourism sectors, and cattle, soybeans, poultry, corn, and cotton are its primary agricultural products. Tennessee has played a major role in the development of many forms of popular music, including country, blues, rock and roll, soul, and gospel.
Tennessee derives its name most directly from the Cherokee town of Tanasi (or "Tanase", in syllabary: ᏔᎾᏏ) in present-day Monroe County, Tennessee, on the Tanasi River, now known as the Little Tennessee River. In 1567, Spanish explorer Captain Juan Pardo and his party encountered a Native American village named "Tanasqui" in the area while traveling inland from modern-day South Carolina; however, it is unknown if this was the same settlement as Tanasi. The town appeared on British maps as early as 1725. Recent research suggests that the Cherokees adapted the name from the Yuchi word Tana-tsee-dgee, meaning "brother-waters-place" or "where-the-waters-meet". The modern spelling, Tennessee, is attributed to Governor James Glen of South Carolina, who used this spelling in his official correspondence during the 1750s. In 1788, North Carolina created "Tennessee County", and in 1796, a constitutional convention, organizing the new state from the Southwest Territory, adopted "Tennessee" as the state's name.
The first inhabitants of Tennessee were Paleo-Indians who arrived about 12,000 years ago at the end of the Last Glacial Period. Archaeological excavations indicate that the lower Tennessee Valley was heavily populated by Ice Age hunter-gatherers, and Middle Tennessee is believed to have been rich with game animals such as mastodons. The names of the cultural groups who inhabited the area before European contact are unknown, but archaeologists have named several distinct cultural phases, including the Archaic (8000–1000 BC), Woodland (1000 BC–1000 AD), and Mississippian (1000–1600 AD) periods. The Archaic peoples first domesticated dogs, and plants such as squash, corn, gourds, and sunflowers were first grown in Tennessee during the Woodland period. Later generations of Woodland peoples constructed the first mounds. Rapid civilizational development occurred during the Mississippian period, when Indigenous peoples developed organized chiefdoms and constructed numerous ceremonial structures throughout the state.
Spanish conquistadors who explored the region in the 16th century encountered some of the Mississippian peoples, including the Muscogee Creek, Yuchi, and Shawnee. By the early 18th century, most Natives in Tennessee had disappeared, most likely wiped out by diseases introduced by the Spaniards. The Cherokee began migrating into what is now eastern Tennessee from what is now Virginia in the latter 17th century, possibly to escape expanding European settlement and diseases in the north. They forced the Creek, Yuchi, and Shawnee out of the state in the early 18th century. The Chickasaw remained confined to West Tennessee, and the middle part of the state contained few Native Americans, although both the Cherokee and the Shawnee claimed the region as their hunting ground. Cherokee peoples in Tennessee were known by European settlers as the Overhill Cherokee because they lived west of the Blue Ridge Mountains. Overhill settlements grew along the rivers in East Tennessee in the early 18th century.
The first recorded European expeditions into what is now Tennessee were led by Spanish explorers Hernando de Soto in 1540–1541, Tristan de Luna in 1559, and Juan Pardo in 1566–1567. In 1673, English fur trader Abraham Wood sent an expedition from the Colony of Virginia into Overhill Cherokee territory in modern-day northeastern Tennessee. That same year, a French expedition led by missionary Jacques Marquette and Louis Jolliet explored the Mississippi River and became the first Europeans to map the Mississippi Valley. In 1682, an expedition led by René-Robert Cavelier, Sieur de La Salle constructed Fort Prudhomme on the Chickasaw Bluffs in West Tennessee. By the late 17th century, French traders began to explore the Cumberland River valley, and in 1714, under Charles Charleville's command, established French Lick, a fur trading settlement at the present location of Nashville near the Cumberland River. In 1739, the French constructed Fort Assumption under Jean-Baptiste Le Moyne de Bienville on the Mississippi River at the present location of Memphis, which they used as a base against the Chickasaw during the 1739 Campaign of the Chickasaw Wars.
In the 1750s and 1760s, longhunters from Virginia explored much of East and Middle Tennessee. Settlers from the Colony of South Carolina built Fort Loudoun on the Little Tennessee River in 1756, the first British settlement in what is now Tennessee and the westernmost British outpost to that date. Hostilities erupted between the British and the Cherokees into an armed conflict, and a siege of the fort ended with its surrender in 1760. After the French and Indian War, Britain issued the Royal Proclamation of 1763, which forbade settlements west of the Appalachian Mountains in an effort to mitigate conflicts with the Natives. Migration across the mountains continued, and the first permanent European settlers began arriving in northeastern Tennessee in the late 1760s. Most of them were English, but nearly 20% were Scotch-Irish. They formed the Watauga Association in 1772, a semi-autonomous representative government, and three years later reorganized themselves into the Washington District to support the cause of the American Revolutionary War. The next year, after an unsuccessful petition to Virginia, North Carolina agreed to annex the Washington District to provide protection from Native American attacks.