5. THE METAL AGE - From 4000 BC people in the Middle East began to make metal objects. - They used fire to heat metal and turn it into tools and weapons. - The Metal Age has three periods: 1. The Coper Age (from 4000 BC) 2. The Bronze Age ( from 3000 BC) 3. The Iron Age ( from 1000 BC) - These periods didn’t begin at the same time in all parts of the world.