Flags of the Revolutionaries

[Afro Thunder]

I took some time and created a neat collage of the revolutionary flags. It appears absolute and constitutional monarchies have the same flags.

Spoiler Alert, click show to read: 

In short, we have:
1 historical flag
4 fictuous ones
7 anachronisms

Well, the fictitious ones don't seem too unreasonable. Keep in mind that something like an American monarchy is... you guessed it, fictitious!