BRONZE AGE

Bronze Age

Main article: Bronze Age

Ox-drawn plow, Egypt, ca. 1200 BC.

The term Bronze Age refers to a period in human cultural development when the most advanced metalworking (at least in systematic and widespread use) included techniques for smelting copper and tin from naturally-occurring outcroppings of copper ores, and then smelting those ores to cast bronze. These naturally-occurring ores typically included arsenic as a common impurity. Copper/tin ores are rare, as reflected in the fact that there were no tin bronzes in Western Asia before 3,000 BC. The Bronze Age forms part of the three-age system for prehistoric societies. In this system, it follows the Neolithic in some areas of the world.

The Bronze Age is the earliest period of which we have direct written accounts, since the invention of writing coincides with its early beginnings.

source: wikipedia.org