The chart describes Vikings, They invaded quite a big part of Europe between 8 and 11 century AD. They were excellent warriors and sailors and their ships - longboats - scared everyone who saw them.
Vikings ;
The people described in the question are the Vikings, a warrior culture from Scandinavia known for raiding Britain and Europe in the 9th and 10th centuries. They used longboats, which were versatile and capable of navigating various waters for quick attacks. The Viking Age marked significant cultural and economic impacts across Europe during their time.
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