Age of metals (15 gen 5600 anni a. C. – 28 feb 3400 anni a. C.)

Descrizione:

its main phases or stages were brass, iron and copper.
During which the man began to make objects of molten metal. The existence of metallurgical processes is indispensable to establish the ascription of an archaeological culture to this stage, since the native metals were worked by hammering from the initial phases of Neolithic

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