What crucial finding was confirmed by the French Academy of Sciences expeditions in the 1730s comparing Arctic and Equatorial latitude measurements?

Answer

The length of one degree of latitude was longer near the poles than near the equator.

The expeditions proved that a degree of latitude measured closer to the poles was physically longer than a degree measured closer to the equator, confirming the Earth bulges at the equator.

What crucial finding was confirmed by the French Academy of Sciences expeditions in the 1730s comparing Arctic and Equatorial latitude measurements?
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