Paleolithic is characterized by unstable climatic conditions and the consecutive existence of nomadic hunters-gatherers. On the contrary, Neolithic era in Helladic - Aegean area it is characterized by stabilization of climatic conditions, a fact that favors the organization of settlements of permanent character, with economy supported by systematic agricultural exploitation, the livestock-farming, the exchange of raw materials and products and the production of ceramics. During Bronze Age take place important changes and realignments, which are focused mainly in the gradual spread of use of metals (mainly coper), in the intensifying of exchanges’ networks and in the emergence of organized settlements. These settlements demonstrate henceforth elements of urbanization, as organization of primary sector, specialization of work, standardization of production, administrative organisation and social differentiation.