Defining Documents in American History: Reconstruction Era (1865-1877)
Laws of Motion and Isaac Newton
Nineteenth-Century Explorers: From Lewis and Clark to David Livingstone
Charles Darwin and the Theory of Evolution by Natural Selection
Defining Documents in American History: Civil War (1860-1865)
Warfare in the Roman Republic: From the Etruscan Wars to the Battle of Actium
Mythology and Culture Worldwide: Chinese Mythology
The Age of Exploration: From Christopher Columbus to Ferdinand Magellan
The Sun-Centered Universe and Nicolaus Copernicus
Authors of The Enlightenment: 1660 to 1800