Nicely done! I just watched the whole thing beginning to end, with a bunch of pauses to see connections. Though I wonder, for my native Hungary in the post-WWI

Nicely done! I just watched the whole thing beginning to end, with a bunch of pauses to see connections. Though I wonder, for my native Hungary in the post-WWII times I think the Presidents are listed, but those are pretty much ceremonial roles, not actually "rulers". The power would probably be with the Prime Minister (and some of them do tend to think of themselves as sort of kings)...