Clarksville is a city in and the county seat of Montgomery County, Tennessee, and the fifth-largest city in the state behind Memphis, Nashville, Knoxville, and Chattanooga, respectively. The city had a population of 132,957 at the 2010 census, and an estimated population of 142,519 in 2012. Wikipedia

Montgomery is the capital of the State of Alabama, and is the county seat of Montgomery County. Named for Richard Montgomery, it is located on the Alabama River, in the Gulf Coastal Plain. As of the 2010 Census, Montgomery had a population of 205,764. Wikipedia