Viking raid warfare and tactics
Vikings were members of tribes, originally from Scandinavia, of Norse ancestry, who gained a reputation for their raids and piracy in many parts of Europe, especially England, Ireland, and Frankish territories. The term "Viking Age" refers to the period roughly from 793 AD to the late 11th century in Europe. In this era Viking activity started with raids on Christian lands in England and eventually expanded to mainland Europe, including parts of present-day Russia. While maritime battles were rare, Viking bands proved very successful in raiding coastal towns and monasteries due to their efficient warships, and intimidating war tactics, skillful hand-to-hand combat, and fearlessness. What started as Viking raids on small towns transformed into the establishment of important agricultural spaces and commercial trading-hubs across Europe through rudimentary colonization. Vikings' tactics in warfare gave them an enormous advantage in successfully raiding (and later colonizing), despite their small population in comparison to that of their enemies.
Helge Ingstad
Helge Marcus Ingstad (30 December 1899 – 29 March 2001) was a Norwegian explorer. After mapping some Norse settlements, Ingstad and his wife Anne Stine, an archaeologist, in 1960 found remnants of a Viking settlement in L'Anse aux Meadows in the province of Newfoundland in Canada. They were thus the first to prove conclusively that the Icelandic Norsemen such as Leif Erickson had found a way across the Atlantic Ocean to North America, roughly 500 years before Christopher Columbus and John Cabot. He also thought that the mysterious disappearance of the Greenland Viking settlement in the 14/15th century could be explained by their emigration to North America.