Before revision: Ancient Bronze Age The Chalcolithic period (or Copper Age) began about 4500 BC, then the Bronze Age began about 3500 BC, replacing the Neolithic cultures.
After revision: 270px|Invasions, destruction and possible population movements during the Late Bronze Age collapse, beginning BCAncient Bronze Age The Chalcolithic period (or Copper Age) began about 4500 BC, then the Bronze Age began about 3500 BC, replacing the Neolithic cultures.