Seafarers by nature, the Norse build the most advanced ships of their time. Used both for trading and for Viking Raids, the Longship was the most advanced vehicle of its time, tracing their origin back to around 400BC, when the Danish Hjortspring boat was built.
In 865, after almost on hundred years of the beginning of the Viking Age, a large Viking army invaded England, and it came to stay. The Great Heathen Army came to settle England, mixing Viking and Anglo-Saxon culture forever in what we know today as the Danelaw.
Wealth in the Viking world came in many forms, from pillaging to trading. It is common knowledge that the people from the North were accomplished traders and explorers, but their economic system was far from simple.