Evidence of habitation exists from the Bølling period (12,500–12,000 BC). By 7700 BC reindeer hunters were settled on the Jutland Peninsula and around 3900 BC agriculture developed. Metal tools and weapons were imported in the Dagger Period (c. 2000 BC) but trading stations on the coast did not appear until around AD 300. The first towns developed in the Germanic Iron Age (AD 400–750). The first trading market was held in the 8th century in Hedeby. Denmark was converted to Christianity in 860 when Ansgar built churches in Hedeby and Ribe.