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Which difficulty increased when Captain Cook circumnavigated New Zealand's islands?

A)Calculating longitude accurately without chronometers
B)Estimating ship speed through turbulent currents
C)Mapping coastlines prone to magnetic anomalies
D)Compensating sextant bearing angles at twilight

💡 Explanation

Determining longitude required accurate timekeeping unavailable until Harrison's chronometers; therefore, Cook relied on dead reckoning and lunar distances, a complex angular measurement method over vast unknown areas rather than methods used later when innovations were ready.

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