Many of the achievements of the ancient indus valley civilization was due to their advanced knowledge of

The correct answer is that their knowledge of construction and organization separated them from the rest.

Explanation:

They were great on their urban planning ang bilding brick houses, and frainage systems just no name a few.

- "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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fourteenth amendment