Why did so many reform movements begin during the progressive era?
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There were so many reform movements happening in the Progressive era because there was many problems caused by industrialization, urbanization, immigration, and political corruption. So, Social reformers were primarily middle-class citizens who targeted political machines.

Explanation:

The main objectives of the Progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption. Social reformers were primarily middle-class citizens who targeted political machines and their bosses.

Explanation:

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the answer in this question is b.(1) create a clear chain of command; (2) limit independence of lower-level workers.  the numbered pair of phrases that best completes the tables as it relates to the united states federal bureaucracy was (1) create a clear chain of command; (2) limit independence of lower-level workers.