Why did unions develop in the late 19th century

fought for better wages, reasonable hours and safer working conditions.

Explanation:

a is correct

hope this let me know if it is right

- "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.

< 3