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History Assignment 3

navigation art or science of directing a ship
uncharted unmapped
observatory a room or building having a telescope
era a period of time
astrolabe a device that enabled navgators to learn ships location by charting stars.
circumnavigate to travel all the way around the globe
columbian exchange the transfer of plants, animals, and diseases between the Americans and Europe, Asia, and Africa
caravel ships that used triangular sails to sail against the wind, and had rudders to improve steering
Created by: jennaizbeast