Answer:
They caused work slowdowns
Continental System, in the Napoleonic wars, the blockade designed by Napoleon to paralyze Great Britain through the destruction of British commerce. The decrees of Berlin (November 21, 1806) and Milan (December 17, 1807) proclaimed a blockade: neutrals and French allies were not to trade with the British.
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Labor unions were formed to push for "a. better working conditions" "d. eight-hour workdays" and "<span>f. demand for higher wages" since the Industrial Revolution had led to great mistreatment of workers. </span>