Cartoon History of the Universe Part 1 is here. Part 2 is here.
A lot of ground gets covered in this volume. It details the life of Muhammad and the rise and spread of Islam. It also touches on Asian and African history, follows the exploits of the Turks and other nomadic peoples, and covers medieval life in China, India, and Japan. Some other high points include "the Dark Ages," Muslim Spain, and the European Middle Ages from the Crusades to the Black Death. The book goes on to cover the Italian Renaissance and various naval expeditions to explore the world, concluding with Christopher Columbus's historic departure in 1492.
Larry Gonick wrote and drew this series of books, which has been coming out sporadically since 1978. This volume of the series won the 2003 Harvey Award for Best Graphic Album of Original Work, and has received many accolades. Reviewer Jerry Stratton raves that all the Cartoon History of the Universe books "should be on every bookshelf of the English-speaking world."
Some sample pages from the book are available here. Another preview is available from publisher W.W. Norton.