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1000-600 BCE: c. 1000 BCE - c. 600 BCE

1st century BCE: c. 100 BCE - CE 1

2nd century BCE: c. 200 BCE - c. 100 BCE

3100-1000 BCE: c. 3100 BCE - c. 1000 BCE

3rd century BCE: c. 300 BCE - c. 200 BCE

4th century BCE: c. 400 BCE - c. 300 BCE

5th century BCE: c. 500 BCE - c. 400 BCE

6th century BCE: c. 600 BCE - c. 500 BCE

Evolution: c. 4 billion years ago - c. 35,000 years ago

First 10 billion years: c. 13.7 billion years ago - c. 3 billion years ago

Neolithic: c. 8000 BCE - c. from 2000 BCE

Prehistory: c. 6 million years ago - 3100 BCE
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