Much of the Vikings success in war was their technical superiority of shipbuilding, though that skill was mostly used for Trading and NOT Raiding, their ships were quite fast.
The square feet area of 32.1 is going to be 3.2 feet.
Probably search for countries level of development and compare them then explain in the paragraph.
Wear<span> away</span><span> or change the appearance or texture of (something) by long exposure to the air</span>
Russia.
It is a huge country and the biggest in the world followed by Canada
