Britannica Educational Publishing 
U.S. Imperialism and Progressivism [PDF ebook] 

With one eye on the world and one on the home front, the United States at the turn of the 20th century was distinguished both by its emerging global engagements-including the acquisition of new territories and its involvement in the First World War-and the social movements that surged throughout the country. Readers examine American history between the end of the Civil War and the end of World War I, considering in depth both the imperialist and progressive influences that heralded the country’s future position as a major force on the international stage. Meticulously chosen articles, speeches, and other primary source documents are included alongside narrative to provide a complete picture of the era.