The goals of the Knights of Labor were to achieve better pay and better working conditions for workers.
A member association of a 19th century secret labor organization formed in 1869 to secure and maintain the rights of workingmen in respect to their relations to their employers.
The purpose of the Knights of Labor was to bring all wager earners together to fight against wage slavery. They were eventually crushed when employers stopped negotiating with them and a 10hr day was reinstated.
Thus, option D is true, as the goal of Knights of Labor were to achieve better pay and better working conditions for workers.
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