Nthe early 20th century, – discovered a skull cap, teeth, and a complete femur in java. these were later identified as the remains of the hominin –.

- "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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mass production/ assembly line production