In olden times very little about the world was known. Many countries in Europe sent out explorers to discover new lands, find trade routes, seek treasure, and gain territory for their country. Learn about explorers from Marco Polo to Neil Armstrong. The biographies of famous explorers include their photos, date and place of birth, occupation, date of death, early life, brief descriptions of their famous voyages and expeditions, their personal life and major accomplishments. They are useful for kids as they are clear, concise, and comprehensive and develop an understanding of the world.