When and how did people start using metals?

Even in the Chalcolithic period 7 thousand years BC. people first started working metal. In the beginning, these were light metals such as copper. Many tools and items needed in the household were made from it. Then, when the first civilizations appeared 4 thousand years BC, people gradually begin to master other metals: bronze, gold, tin. They are used to create not only tools, but also weapons for the army and decorations: small jewelry and decorations for buildings or furniture.