During the Industrial Age, what caused a growth in labor union membership in the United States?

The need to protect the common interest of workers.

Explanation:

The labor movement in the United States grew out of the need to protect the common interest of workers. For those in the industrial sector, organized labor unions fought for better wages, reasonable hours and safer working conditions.

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:The labor movement in the United States grew out of the need to protect the common interest of workers. For those in the industrial sector, organized labor unions fought for better wages, reasonable hours and safer working conditions

Explanation: hopefully this helps>?

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.

b) he seized power from the directory and appointed himself emperor

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