3

Marco Polo

3

Roald Amundsen

3

Daniel Boone

3

Vasco da Gama

3

James Cook

3

Jacques Cousteau

3

Christopher Columbus

3

Francis Drake

3

David Livingstone

3

Amerigo Vespucci

3

Ferdinand Magellan

3

Ibn Battuta

3

Leif Erikson

3

Edmund Hillary

3

Sacagawea

3

Jacques Cartier

3

Zheng He

3

Neil Armstrong