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2500 BCE
2400 BCE
2300 BCE
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2100 BCE
2000 BCE
1900 BCE
1800 BCE
1700 BCE
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300 BCE
2500 BCE: Earliest use of the Indus Script.
530 BCE: Persia conquers the Indus Valley.
450 BCE - 350 BCE: Earliest recorded archaeological evidence of the Brahmi script found at Anuradhapura, Sri Lanka.
268 BCE - 232 BCE: Reign of Ashoka the Great, third ruler of the Mauryan Empire.