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. Its economy is dominated by the health care, music, finance, automotive, chemical, electronics, and tourism sectors, and cattle, soybeans, corn, poultry, and cotton are its primary agricultural products. The Great Smoky Mountains National Park, the nation's most visited national park, is in eastern Tennessee. Etymology 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. This town appeared on British maps as early as 1725. 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. 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 out of the Southwest Territory, adopted "Tennessee" as the state's name. History Pre-European era 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