Why did a number of groups pushing for reform emerge during the late 1800s and early 1900s

A rich history of social movements shaped progressive thought throughout the 19th and 20th centuries. Historian Sidney Milks characterizes the accomplishments of the original Progressive Era as “momentous reconstructions of politics,” a description that equally applies to the numerous social movements that aimed to better align America’s political and social order with its ideals of liberty, equality, and opportunity for all.

- "made the south's economy grow rapidly and a small effect that a lot of people don't know is that it made the more demand of slaves and cotton products. and also new states formed due to plantations growing in size."

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