Why were labor unions formed during the Progressive Era? to dismantle trusts and monopolies
to discourage the consumption of alcohol among workers
to encourage camaraderie among employees
to help workers express their demands to employers

D:to help workers express their demands to employers

Explanation:

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in february 1787, congress decided that a convention should be convened to revise the articles of confederation, the nation’s first constitution. in may, 55 delegates came to philadelphia, and the constitutional convention began. debates erupted over representation in congress, over slavery, and over the new executive branch. the debates continued through four hot and muggy months. but eventually the delegates reached compromises, and on september 17, they produced the u.s. constitution, replacing the articles with the governing document that has functioned effectively for more than 200 years.