3
Christopher Columbus
4
America in the 20th Century
3
Vasco da Gama
4
Famous Americans: Abraham Lincoln
4
The American Revolution
3
David Livingstone
4
Early Native Americans
3
All About History
4
After the American Civil War
4
The American Civil War
4
Famous Americans: George Washington
4
Early North American Settlers
3
Edmund Hillary
4
History of Carnival Rides
4
Famous Americans: Thomas Jefferson
4
An Introduction to the History of the United States of America
3
Neil Armstrong
3
Major Religions of the World
3
Daniel Boone
4
From the American Revolution to the Civil War
3
Marco Polo
3
Amerigo Vespucci
4
Famous Americans: Benjamin Franklin
4
The Sites & History of Coney Island