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← HistoryBy the late 1700s, which navigational consequence increased from the use of Greenwich Mean Time?
A)Shipboard chronometer calibration errors
B)Sextant error propagation at sea
C)Improved accuracy in longitude determination✓
D)Increased computation of magnetic variations
💡 Explanation
Accurate timekeeping enabled consistent determination of longitude based on the **earth's rotation;** because measuring the angular difference between local time and GMT became possible. Therefore, longitude calculations improved, rather than calibration issues or sextant errors influencing results significantly.
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