Prehistoric technology Ground and polished stone tools continued to be created and used during the Neolithic period. Numeric record keeping evolved from a system of counting using small clay tokens that began in Sumer about 8000 BC. The Stone Age developed into the Bronze Age after the Neolithic Revolution. The Neolithic Revolution involved radical changes in agricultural technology which included development of agriculture, animal domestication, and the adoption of permanent settlements. The Bronze Age is characterised by metal smelting of copper and its alloy bronze, an alloy of tin and copper, to create implements and weapons. Polished stone tools continued to be
Neolithic British Isles in the landscape, many of which were megalithic in nature. The earliest of these are the chambered tombs of the Early Neolithic, although in the Late Neolithic this form of monumentalization was replaced by the construction of stone circles, a trend that would continue into the following Bronze Age. These constructions are taken to reflect ideological changes, with new ideas about religion, ritual and social hierarchy. The pre-Indo-European people in Europe were not literate, so left behind no written record that modern historians can study; all that is known about this time period in Europe comes from archaeological investigations. This