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The astrolabe was invented in 150 B.C. It was used by all early explorers
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Leif Eriksson and his crew landed in present day Newfoundland.
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Prince Henry the navigator was born and later brought together many explorers and map makers
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Bartholomeu Dias sailed to the tip of Africa and landed on March 12 1488.
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Christopher Columbus discovered America even though the Native Americans were there first.
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Cristopher Columbus returned to America with 17 ships and 1,200 men to set up permanent colonies in the new world.
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Christopher Columbus went back to America for the third time with six ships.
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Columbus goes back to america again for his final voyage.
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Magellan and his five ship crew set out to circumnavifate the world.
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Henry Hudson dicovered the Hudson river when his crew and him were looking for a northwest passage
