Which made it possible for mongol armies to conquer chinese walled cities?

no it wasn't possible for the mongols to conquer chineese

- "schenck v. united states, case in which the u.s. supreme court ruled on march 3, 1919, that the freedom of speech protection afforded in the u.s. constitution's first amendment could be restricted if the words spoken or printed represented to society a “clear and present danger.” "

- speech aimed to potentially create danger could be banned.

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- "it was a failure that was an embarrassment for the kennedy administration."

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