Why are labor unions able to negotiate effectively with companies where individual workers can’t?

Why are labor unions able to negotiate effectively with companies where individual workers can't? Labor unions can use the power of collective bargaining and strikes to make management listen. Instead of using the power of one, easily replaced worker, the union uses the power of all workers for leverage.

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answer; /// (c) i believe that the correct answer is; ///full faith and credit.

answer; ///i believe that the correct answer is ; hieroglyphs or glyphs; the maya script, also known as maya glyphs, was the writing system of the maya civilization of mesoamerica; as always plz check first..good luck