Cornerstones of freedom

Examines the history of environmentalism in the U.S. and what the government is doing today to protect the environment.

Explores the conditions of slave life in America before the Civil War and how the Undergroud Railroad operated, showcasing famous conductors like Harriet Tubman and John Rankin, what life was like after a slave had escaped, and how slavery was permanently ended in the U.S.

Discusses the final battles of the Civil War, the circumstances of the surrender, and the immediate aftermath of the war while highlighting important figures such as Lee, Grant, and President Abraham Lincoln. Includes illustrations, a timeline, a glossary, and further reading sources.

Chronicles the history of terrorist attacks on the United States, explores the motivations of terrorists who target innocent people, and looks at what the U.S. government is doing to fight terrorism.

Chronicles the history and development of the Internet, focusing on the inventors that contributed to its success. Includes photographs, a timeline, a glossary, and further resources.

Presents an introduction to the Great Depression of the 1930s discussing the economic boom of the 1920s to the depressions conclusion during World War II, how Americans survived after losing their jobs and what the United States government did to combat the effects of the depression.

Discusses how the Industrial Revolution affected America, including such aspects of the era as child factory labor, the inventions of Samuel Slater and John Deere, and the emergence of the railroad industry.

Details the history of World War I, discussing the causes of the war, major events of the war, the allied countries and the central countries, and the Treaty of Versailles that officially ended the war.

Examines the politics of oil and describes important people, places, and events of the Persian Gulf War.

Explores various details of frontier and pioneer life in connection with the Oregon National Historic Trail, covering topics such as the growth of fur trapping and the contest between different nations for control of Oregon, and who helped discover the best routes.