Nordic Bronze Age objects. These valuable metals were all imported, primarily from Central Europe, but they were often crafted locally and the craftsmanship and metallurgy of the Nordic Bronze Age was of a high standard. The archaeological legacy also comprise locally of crafted wool and wooden objects and there are many tumuli and rock carving sites from this period, but no written language existed in the Nordic countries during the Bronze Age. The rock carvings have been dated through comparison with depicted artifacts, for example bronze axes and swords. There are also numerous Nordic Stone Age rock carvings, those of northern Scandinavia mostly
Bronze Age sword Hallstatt and Italy region. Sword production in China is attested from the Bronze Age Shang Dynasty, from roughly 1200 BC. The technology for bronze swords reached its high point during the Warring States period and Qin Dynasty (221 BC – 207 BC). Amongst the Warring States period swords, some unique technologies were used, such as casting high-tin edges over softer, lower-tin cores, or the application of diamond shaped patterns on the blade (see the sword of Gou Jian). Also unique for Chinese bronzes is the consistent use of high-tin bronze (17-21% tin), which is very hard and breaks under excess