Describe the europeans impact in slavery in africa

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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studies show tha in 7.5 billion years from now, the expanding sun will engulf, and destroy, the earth.