HISTORY_3                                                                                                                                      

3,800,000,000 B.C. Archean Eon – life begins on Earth

  • Eoarchean Era: 3,800 Ma
  • Paleoarchean Era: 3,600 Ma
  • Mesoarchean Era: 3,200 Ma
  • Neoarchean Era: 2,800 Ma

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