history of vikings that invaded europe?

Answer 1

Vikings were Europeans so they didn't invade Europe!! They were already here!

Answer 2

British Isles and Ireland
The beginning of the Viking Age in the British Isles is commonly given as 793, when it is recorded in the Anglo-Saxon Chronicle that the Northmen raided the important island monastery of Lindisfarne. In 794, according to the Annals of Ulster, there was a serious attack on Lindisfarne's mother-house of Iona which was followed in 795 by raids upon the northern coast of Ireland. From bases there, they were able to attack Iona again in 802, cause great slaughter the amongst the Céli Dé Brethren, and burn the Abbey to the ground. In 832, a Viking fleet of about 120 invaded kingdoms on Ireland’s northern and eastern coasts. From 840, the Vikings began establishing permanent bases at the coasts. In 839, a large Norse fleet invaded via the River Tay and River Earn, both of which were highly navigable, and reached into the heart of the Pictish kingdom of Fortriu. The end of the viking age proper in Scotland is generally considered to be in 1266.

Gaul and Iberia
Gaul or West Francia suffered more severely than East Francia during the Viking raids of the ninth century, which destroyed the Carolingian Empire, though it suffered less severely than the Low Countries. By the mid 9th century, though apparently not before (Fletcher 1984, ch. 1, note 51), there were Viking attacks on the coastal Kingdom of Asturias in the far northwest of the peninsula, though historical sources are too meagre to assess how frequent or how early raiding was. Richard Fletcher attests raids on the Galician coast in 844 and 858: "Alfonso III was sufficiently worried by the threat of Viking attack to establish fortified strong points near his coastline, as other rulers were doing elsewhere." In 968 Bishop Sisnando of Compostela was killed, the monastery of Curtis was sacked, and measures were ordered for the defence of the inland town of Lugo. After Tui was sacked early in the 11th century, its bishopric remained vacant for the next half-century. In the Islamic south, the first navy of the Emirate was called into being after the humiliating Viking ascent of the Guadalquivir, 844, and was tested in repulsing Vikings in 859.

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