Bronze Age
Bronze Age cultures differed in their development of the first writing. According to archaeological evidence, cultures in Mesopotamia (cuneiform script) and Egypt (hieroglyphs) developed the earliest viable writing systems.
The overall period is characterized by widespread use of bronze, though the place and time of the introduction and development of bronze technology were not universally synchronous. Human-made tin bronze technology requires set production techniques. Tin must be mined (mainly as the tin ore cassiterite) and smelted separately, then added to molten copper to make bronze alloy. The Bronze Age was a time of extensive use of metals and of developing trade networks (See "Tin sources and trade in ancient times"). A 2013 report suggests that the earliest tin-alloy bronze dates to the mid-5th millennium BC in a Vinča culture site in Pločnik (Serbia), although this culture is not conventionally considered part of the Bronze Age. The dating of the foil has been disputed.
Blyth, Northumberland
Little is known of the early development of the Blyth area. The oldest archaeological find is an antler hammer dating from the late Neolithic or early Bronze Age period, which was found at Newsham in 1979.
Human skulls, a spearhead and a sword dating from the Bronze Age were found in the river in 1890, as well as a bronze axe which was found at South Beach in 1993, and a dagger found at Newsham. Although there is no conclusive evidence of a Roman presence in the area, an earthwork shown on early mapping of the area, at the location of present-day Freehold Street, is said to have been a Roman camp, but it has also been argued that it may be of Norsemen origin or date from the Civil War. Debate also surrounds a mosaic which was found near Bath Terrace. The strongest evidence so far has been a single coin, dating from the reign of the Emperor Constans (AD337–350), which was found during excavations for a dry dock. Also four Roman coins were found when digging an air raid shelter in a back garden on Chestnut Avenue.