Empires in the Middle Ages: The Crusades
The Britannica Guide to Islam: The Islamic World from 1041 to the Present
Cause & Effect: Ancient Civilizations: Ancient Mesopotamia
Empires in the Middle Ages: The Byzantine Empire
Empires in the Middle Ages: The Ottoman Empire
Cause & Effect: Modern Wars: World War I
Empires in the Middle Ages: The Islamic Caliphate
Empires in the Middle Ages: The Mongol Empire
The Britannica Guide to Islam: The Islamic World from Prehistory to 1041
Power and Religion in Medieval and Renaissance Times: The Italian and Northern Renaissance
World History: The Black Death: Bubonic Plague Attacks Europe
American History: The Salem Witch Trials: A Crisis in Puritan New England
Russian Revolution of 1917: The Essential Reference Guide
The Great Depression and the New Deal: Key Themes and Documents
Hidden Heroes: Women with Wings: Women Pilots of World War II
Primary Sources in World Warfare: World War I
A Political and Diplomatic History of the Modern World: The Cold War
The Sea in World History: Exploration, Travel, and Trade
Primary Sources in World Warfare: World War II