Which countries did the Vikings invade during the middle ages?

The Vikings originally came from three countries in Scandinavia; Denmark, Norway and Sweden. The name 'Viking' came from a language called 'Old Norse' and means 'a pirate raid'. People who went off raiding in ships were said to be 'going Viking'. The Viking age in European history was about AD 700 TO 1100. During this period many Vikings left Scandinavia and travelled to other countries, such as Britain and Ireland. Some went to fight and steal treasure. Others settled in new lands as farmers, craftsmen or traders. 

The Viking Age 700-1100

Year	What happened in that year
700 AD	The Viking age begins
787	The first Viking raid on England
793	Vikings attack monastery at Lindisfarne
865	The Great Army of the Vikings invades England
866	Vikings capture York
878	King Alfred defeats the Vikings
900	Vikings established a rule over the north of Scotland
1000	Vikings establish a short-lived settlement in North America
1001	Vikings land in America
1002	King of Sweyn of Denmark invades England
1016	Knut of Denmark becomes King of England
1066	William the Conqueror, who is descended from the Vikings, invades England
1066	The end of the Viking age

The Viking alphabet