Which group were most influental in passing the pure food and drug act?

Progressives

Explanation:

he Progressives pushed for reform in many areas. The quality of food and access to drugs became the focus of Progressive Republican Teddy Roosevelt

- "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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an expansion is one of two basic business cycle phases; the other is contraction. the transition from expansion to contraction is a peak, and the changeover from contraction to expansion is a trough.