alleryWhen was the earliest known use of stone tools?
AAbout 3.3 million years ago
BAbout 33,000 years ago
CAbout 3,300 years ago
DAbout 330,000 years ago
Answer & Solution
Correct answer: A. About 3.3 million years ago
Hominins are known to have used stone tools from about 3.3 million years ago.
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