11. Copper
Copper, one of the first metals harvested by humans, was essential for tools, weapons, and currency. The Bronze Age itself was named after an alloy using this versatile metal, marking profound technological shifts. Copper’s malleability and conductivity made it invaluable in various applications, from early coinage to modern electrical wiring. Its enduring presence underscores its significance in human history and technological advancement. (pubs.usgs.gov)
