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 Korea system was applied during the post-Imperial Japanese colonization period as a way to refute the claims of Imperial Japanese colonial archaeologists who insisted that, unlike Japan, Korea had "no Bronze Age". There are some problems with the three-age system applied to the situation in Korea. This terminology was created to describe prehistoric Europe, where sedentism, pottery and agriculture go together to characterize the Neolithic stage. The periodization scheme used by Korean archaeologists proposes that the Neolithic began in 8000 BCE and lasted until 1500 BCE. This is despite the fact that palaeoethnobotanical studies indicate that the first "bona fide" cultivation