alleryWhen was the sphericity of the Earth established by Greek astronomy?
A5th century AD
B1st century AD
C15th century AD
D3rd century BC
Answer & Solution
Correct answer: D. 3rd century BC
1. Greek astronomers worked out that the Earth is round.
2. This was established in the 3rd century BC.
3. The earliest terrestrial globe appeared from that period, not in the 15th century.
_Source: Wikipedia, Globe, History_
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