swedeens

Except if you actually research it, Sweden existed in the 1100s and had a revolution on that date and is considered the time it became "modern Sweden" so you're wrong.

That being said King Eric IX apparently adopted the golden cross on blue background in 1157 and there's no known flag prior to that, so the video is still probably wrong too.

This person who made the video only said Sweden and nothing else, so they never said anything about its past. There's a whole bunch of videos of this fake crap, they just make up a random flag and claim it as one of its past flags.