Which geographical feature is the United States capital closest to?

Washington National Cathedral,

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

  in the 19th century trade unionism was mainly a movement of skilled workers.

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nafta and the union are used as a trade between other countries these   organizations are used as spokes person for the country