The Vikings were a group of seafaring warriors from Scandinavia who raided, traded, and explored much of Europe, Asia, and North America during the 8th to 11th centuries. They were particularly active in the North Atlantic, and their raids and conquests had a profound impact on the history and culture of many regions.
The Vikings conquered many regions during their time, including large parts of England, Ireland, Scotland, France, Germany, and the Baltic Sea region. They also established settlements in Iceland, Greenland, and North America. However, there is no evidence that the Vikings ever conquered Greece.
There are a few possible reasons why the Vikings may not have conquered Greece. One possibility is that the Greeks were simply too strong and well-organized to be defeated by the Vikings. Another possibility is that the Vikings were not interested in conquering Greece, as it was not a major trading or political center at the time. Finally, it is also possible that the Vikings were simply unaware of Greece's existence.