Changes

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|epigrafe=Experimentation with metallurgy: the Bronze Age}}

In the Second Millennium BC, population growth created a greater demand for raw materials and subsistence products, causing agricultural and livestock farming (and its by-products) to become more widespread. This still Neolithic society had already mastered metallurgical techniques and had discovered bronze, a strong alloy of copper and tin. Bronze arrived on the Peninsula through the Pyrenees in the Third Millennium BC and was used along with copper to make tools and objects, according to stratigraphic studies of the Bauma del Serrat del Pont site (Girona).

Trade increased during the Early Bronze Age and there are strong indications that society was becoming increasingly socially stratified. This was evidenced by the discovery of burial sites for single individuals (mainly in burial pits and megalithic cists) as well as by differences in the quality and quantity of funerary objects placed in these sites. The Argar culture, which succeeded the bell-shaped ceramic, and produced a wide range of ceramic objects, was no longer the only flourishing culture on the Peninsula, according to research carried out in the last 50 years. The Bronze Age map shows the emergence of a diversity of cultures chronologically beginning with the Protocogota settlements on the Nothern Plateau around 2000 BC.