aug 20, 3000 BC - Stone Age

Description:

The use of metals, supplanted the flint and other stone materials that until then were the basic material for the development of agricultural tools, weapons and construction materials; this made it possible to have more durable and efficient objects. All these metals were already known by the preneolítico man, but this did not dominate the techniques for its elaboration and manipulation, techniques that required very high temperatures.