How does the speaker emphasize the idea that the British are trying to deceive his fellow countrymen?

the viking voyages took place during the middle ages, which was about this time. 500 to 1350. the viking voyages took place during the middle ages, which was about this time.

though both had similar roots, they both took these similar bases & formed it into their own way. both the byzantine empire and ancient roman have similar aspects, but each one made it unique. both the byzantine empire and ancient romans had roman influences which affected their culture