WORLD CIVILIZATION

Detailed explanation-1: -Ancient Sumer may have been the first civilization to start adding tin to copper to make bronze. Bronze was harder and more durable than copper, which made bronze a better metal for tools and weapons.

Detailed explanation-2: -The Bronze Age is the time period when people made tools from an alloy (a mixture of metals) called bronze. It started after the Stone Age. Bronze is a mixture of mainly copper and tin: usually nine parts copper to one part tin.

Detailed explanation-3: -Early Metal Tools Bronze is an alloy, or mixture, of copper and tin. Before bronze was discovered, early metal tools were made from pure copper or sometimes from rare iron meteorites. Copper is known to have been worked in Anatolia (now in Turkey) by 6500 bc. The use of copper later became widespread in many areas.