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What two instruments made navigation much easier in the 1900s? Global Positioning Satellite (GPS) and two-way radio The chronometer and the astrolab The cross-staff and the compass. The chronometer and
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What two instruments made navigation much easier in the 1900s?

Global Positioning Satellite (GPS) and two-way radio
The chronometer and the astrolab
The cross-staff and the compass.
The chronometer and the compass.

User Kordonme
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A global positioning satellite and the two way radio is the instruments that made navigation easier in the 1900s. This technology would help sailors to find their way on the vast ocean voyages.
User Gokul Thiagarajan
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The two instruments that made navigation much easier in the 1900s were Global Positioning Satellite (GPS) and two-way radio.
User Lance Rushing
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