The Vikings (from Old Norse víkingr) were seafaring north Germanic people who raided, traded, explored, and settled in wide areas of Europe, Asia, and the North Atlantic islands from the late 8th to the mid-11th centuries. Vikings were fierce warriors they were called berserkers, frenetic, furious fighting, they may have induced this mental state through indigestion of materials, such as hallucinogenic mushrooms or massive amount of alcohol. They also used just two kind of ships such as the drakkar and the knarr, the drakkar or long ship was design for military usage with its speed and agility. On the other hand the knarr was a merchant vessel design to carry cargo. Vikings earliest recorded raids happened on 790s, until Norman Conquest in England in 1066. Christianity was taking root on Denmark and Norway and Christian slaves were set free and Norway was separated in to two religions, that end the Viking age.