The Vikings originated in Scandinavia and gradually expanded their influence across Europe from the 8th to 11th centuries. They raided and traded along the coasts and navigable rivers of Britain, Ireland, continental Europe, and even reached North America. The Vikings established settlements in Iceland, Greenland, and parts of Canada. Their civilization was organized into chieftain-led clans with distinct social roles and hierarchies. The Vikings made significant advances in seafaring technologies like their iconic longships, which allowed them to explore and influence many lands during the Viking Age.