The Frontier State, 1818-1848 is a historical book written by Theodore Calvin Pease in 1922. The book provides an in-depth analysis of the state of Illinois during the period from 1818 to 1848. The author explores the social, economic, and political changes that took place in the state during this time, as Illinois evolved from a sparsely populated frontier region to a thriving state with a growing population and economy.Pease examines the role of...