Copper was used by ancient cultures, and there is no known person responsible for its discovery. However, estimates place its discovery at about 9,000 BC in the Middle East, according to ProQuest. Functional copper tubing has been found in ancient Egyptian tombs.
At one time, copper was very abundant. Its red color made it easy to identify. Copper is very malleable. By mixing it with other metals, one can create a hard alloy to make tools and other objects. The first alloy produced was bronze, which is made by mixing copper and tin. Bronze was so important in making tools that the Bronze Age, ranging from 4,000 to 3,000 BC was named for it.