Sectionalism Unmasked is a historical book written by Henry Edwin Tremain in 1907. The book delves into the political and social tensions that existed in the United States during the mid-19th century, leading up to the American Civil War. Tremain argues that sectionalism, or the divide between the North and South, was the root cause of the conflict. He provides a detailed analysis of the events and ideologies that contributed to the sectional divide,...