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
Prehistoric Asia countries are Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan, and Afghanistan. East Asia, for the purpose of this discussion, includes the prehistoric regions of China, Taiwan, Tibet, Xinjiang and Korea. Study of Prehistoric China includes its paleolithic sites, neolithic cultures, Chalcolithic cultures, the Chinese Bronze Age, and the Bronze Age sites. The earliest traces of early humans, "Homo erectus", in East Asia have been found in China. Fossilized remains of Yuanmou Man were found in Yunnan province in southwest China and have been dated to 1.7 Ma. Stone tools from the Nihewan Basin of the Hebei province in northern China are 1.66