How did two of the following contribute to the reemergence of a two-party system in the period 1820-1840? major political personalities, states’ rights, economic issues.

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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