In the Bronze Age permanent all-year-round cultivation and animal husbandry spread, but the cold climate phase slowed the change. Cultures in Finland shared common features in pottery and also axes had similarities but local features existed. The Seima-Turbino phenomenon brought the first bronze artifacts to the region and possibly also the Finno-Ugric languages. Commercial contacts that had so far mostly been to Estonia started to extend to Scandinavia. Domestic manufacture of bronze artifacts started 1300 BC with . Bronze was imported from Volga region and from Southern Scandinavia.