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OpenStudy (anonymous):

which arab and greek invention enables mariners to figure their locations at sea by measuring the position of objects in the sky? A. astrolobe B. global positioning system C. magnetic compass D. sextant

OpenStudy (anonymous):

wasnt it the magnetic compass?

OpenStudy (anonymous):

Sextant -enabled mariners to figure their locations at sea by measuring the position of objects in the sky

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