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
Heavy Neolithic flakes, tortoise cores, discoid cores and steep scrapers. This presented particular problems with sites where Heavy Neolithic material was mixed with that from the Lower Paleolithic and Middle Paleolithic, such as at Mejdel Anjar I and Dakoue. Although tools similar to Heavy Neolithic ones were found at later Neolithic surfaces sites, little relationship could be established between those found at the later Neolithic tells, where flints were often sparse, especially at those of later dates. The relationship and dividing line between the related Shepherd Neolithic zone of the north Bekaa Valley could also not be clearly defined but was suggested