Chronological Record

Ancient Civilizations & Engineering

3,000 BCE — 500 BCE

As populations boom, agriculture scales through massive state-sponsored engineering and complex irrigation networks.

Ancient Civilizations & Engineering

Key Regions & Powers

Nile ValleyMesopotamiaIndus Valley

Defining Milestones

  • •Invention of the scratch plough
  • •Basin irrigation networks
  • •Crop surplus taxation