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5 October, 00:04

What two instruments made navigation much easier in the 1900s?

A.) Global Positioning Satellite (GPS) and two-way radio

B.) The chronometer and the astrolab

C.) The cross-staff and the compass

D.) The chronometer and the compass

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  1. 5 October, 02:06
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    Answer: A. Global Positioning Satellite (GPS) and two-way radio

    The two instruments that were used and that were made navigation convenient and easier in 1990s are the GPS and the two-way radio. GPS is a tracking system using Global Navigation Satellite System.
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