Christopher Columbus - While Columbus initially believed he had reached Asia when he landed in the Caribbean in 1492, he soon realized he had discovered a new world. He described the lands he encountered as the "Indies" and believed he had opened a new trade route to the East.
Ferdinand Magellan - Magellan led the first circumnavigation of the world, which proved that the Earth was spherical and helped establish the true size of the planet. Although Magellan himself died during the voyage, his expedition's discoveries were groundbreaking.
James Cook - Cook made detailed maps of many Pacific Ocean regions and encountered various indigenous peoples. His voyages contributed significantly to European knowledge of the Pacific and led to the establishment of British colonies in Australia.
David Livingstone - Livingstone's extensive exploration of Africa, especially his discovery of Victoria Falls, greatly expanded European understanding of the African continent and its geography.
Lewis and Clark - The Lewis and Clark Expedition across North America provided the United States with a wealth of information about the vast western territory, paving the way for future exploration and settlement.