Tenn. Code § 5-9-102
The county legislative bodies may make appropriations of money to provide for exhibits of their agriculture, horticulture, and mineral products and resources and manufactured products and the erection of buildings and other permanent improvements at the fairs to be held within the respective counties, and for exhibits of their agriculture, horticulture, and mineral products and resources and manufactured products and the erection of buildings at the Tennessee State Fair held annually at the Wilson County fairgrounds, under the management of the Tennessee State Fair Association or Wilson County Promotions, Inc., or both; and to provide ways and means and prescribe rules and regulations governing the expenditure of any moneys so appropriated.
T.C.A. § 5-9-102