One of the most important inventions of the late eighteenth century that spurred forward Western navigation was the

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The chronometer, a device invented in 1761 by John Harrison, greatly improved navigation by allowing sailors to accurately determine longitude while at sea. Prior to this invention, sailors had to rely on less precise methods such as celestial navigation with the astrolabe or sextant, or using the magnetic compass which was subject to variations in the earth's magnetic field.

One of the Most Important Inventions of the Late Eighteenth