It is a way to determine the exact location of any spot in the world :)
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.
I dont know all the answers but i know one and its
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Answer:
D
Explanation:
I literly just finished studying this and amnow taking the test lol.
