CLARKSVILLE, a city of northern Tennessee, on the Cumberland river at the mouth of the Red river, 50m. N.W. of Nashville ; the county seat of Montgomery county. It is on Federal highway 41, and is served by the Louisville and Nashville and the Tennessee Central railways and by river steamers. The population in 1920 was 8,11o; 1930, 9,242. It is in a region of great scenic beauty, at the centre of the dark tobacco belt. It has a very large trade in both leaf and manufactured tobacco, and in pure-bred live stock, dairy products and strawberries. There are flour-mills, a large snuff factory and other industries. Clarksville was settled in 1780, was named after Gen. George Rogers Clark and was chartered as a city in 1850. Dunbar's Cave, a picturesque and interesting cavern, is 3m. from the city.