AD 1100
In the absence of any Roman occupation, Sweden's Iron Age is reckoned up to the introduction of stone architecture and monastic orders about AD 1100. Much of the period is proto-historical, that is, there are written sources but most hold a very low source-critical quality. The scraps of written matter are either much later than the period in question, written in areas far away, or local and coeval but extremely brief.
Read more about this topic: Prehistoric Sweden, Iron Age, 500 BCE