why was the progressive movement very important for the U. S. during the late 1800's? why was the movement needed? who/what helped to make a difference?

it just helped america explanation under

Explanation:

The Progressive movement was a turn-of-the-century political movement interested in furthering social and political reform, curbing political corruption caused by political machines, and limiting the political influence of large corporations.

your welcome :)

lincoln presided over the union victory in the american civil war, which dominated his presidency. a former whig, lincoln ran on a political platform opposed to the expansion of slavery in the territories. his election served as the immediate impetus for the outbreak of the american civil war.