Is Polish the most difficult language?

"I Speak Polish: What's Your Superpower" song by Let's Polish
https://www.youtube.com/watch?v=_NifCNlu8nE

Foreign Services Institute language difficulty categories:
http://www.effectivelanguagelearning.com/language-guide/language-difficulty

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***The intro logo has been censored. The original image of the eagle was taken from a PDF coloring book with no copyright. However, that image was taken from another artist without his permission. So, before there were any copyright claims or any hurt feelings, I censored/removed the original logo that was in the intro of this film.

Видео Is Polish the most difficult language? канала The Foreign Citizen