__________ have been used as a grid measurement system for navigating the Earth for hundreds of years.
A.
GPS systems
B.
The stars
C.
Latitude and longitude
D.
Compasses
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Asked 11/18/2015 8:56:32 AM
Updated 11/18/2015 9:17:56 AM
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jeifunk [11/18/2015 9:17:56 AM]
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