Chronometer, a timekeeping device that uses the Earth's rotation to measure longitude, Sextant, Measures latitude better than the astrolabe, Astrolabe, A handheld device used for calculations, including calculating latitude (position relative to the equator), Compass, Uses a magnet which pulls toward Earth's poles., Lateen sail, triangular and could take wind from either side of the ship to make travel faster, Square sails, Traditional sails used in Europe, Gutenberg Printing Press, allowed anything written to be produced without having to handwrite copies

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