Embedded Files
The Sumerians discovered that bronze, a copper and tin alloy, could be used to make tools and weapons that were much stronger than stone. Bronze is metal that needs to be cast using a mold.
Page updated
Google Sites
Report abuse
The Sumerians discovered that bronze, a copper and tin alloy, could be used to make tools and weapons that were much stronger than stone. Bronze is metal that needs to be cast using a mold.