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- DictionaryStone Age/ˈstōn ˌāj/
noun
- 1. a prehistoric period when weapons and tools were made of stone or of organic materials such as bone, wood, or horn.
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The Stone Age was a broad prehistoric period during which stone was widely used to make stone tools with an edge, a point, or a percussion surface. The period lasted for roughly 3.4 million years and ended between 4,000 BC and 2,000 BC, with the advent of metalworking. It therefore represents nearly 99.3% of human history. Wikipedia