China

By BikymanMK1
  • 206

    Han dynasty

    (221-206/207 B.C.)
  • 221

    Quin dynasty

    (221-206/207 B.C.)
  • 476

    476 BC - 221 BC Great wall of china was built

    476 BC - 221 BC Great wall of china was built
    source:
    http://www.travelchinaguide.com/china_great_wall/facts/who-built.htm
  • Mar 7, 721

    chain pump was invented

  • Shang dynasty

    1600-1100 B.C

  • Gunpowder is invented

  • pump was invented

  • the wheel was invented

    35000 bc