Copper in HistoryFact 8 of 28
Copper metallurgy flourished in South America, particularly in Peru, around the beginning of the first millennium AD. Ceremonial and ornamental objects show the use of hammering and annealing (heating and cooling to soften and temper the metal). Copper was most commonly alloyed with gold and silver during the time when the Mayans, Incans and Aztecs reigned in Central and South America.
