The book ""The Doctrine of Non-Intervention with Slavery in the Territories"" was written by Milo Milton Quaife in 1910. The book explores the controversial issue of slavery in the territories of the United States during the 19th century. Quaife argues that the doctrine of non-intervention, which held that the federal government should not interfere with slavery in the territories, was a flawed and immoral policy. He examines the historical context...