https://youtu.be/yak4JLMSN4g
https://youtu.be/Wc5zUK2MKNY
https://www.ducksters.com/history/middle_ages_vikings.php
https://www.natgeokids.com/au/discover/history/general-history/10-facts-about-the-vikings/
https://www.historyforkids.net/the-vikings.html
https://www.dkfindout.com/us/history/vikings/