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 Tibet while findings in Qamdo resemble the Dadunzi site in Yunnan, although there may be some connections with the Neolithic culture of the Yellow River valley. Neolithic Tibet Neolithic Tibet refers to a prehistoric period in which Neolithic technology was present in Tibet. Tibet has been inhabited since the Late Paleolithic. During the mid-Holocene, Neolithic immigrants from northern China largely replaced the original inhabitants, bringing with them elements of Neolithic culture and technology, although a degree of genetic continuity with the Paleolithic settlers still exists. During the mid-Holocene, Neolithic settlers from northern China migrated to Tibet, possibly from a mixture of