Answer:
"How to Observe Morals and Manners (1838)."
Explanation:
Describes how to observe behavior when one is a participant in the sit is being studied
The issue during the Progressive Era that would most likely have united Mary Harris "Mother” Jones and Lewis Hine is option A. ending child labor
<h3>What is the Progressive Era?</h3>
The Progressive Era was a period of widespread social activism and political reform across the United States of America that spanned the 1890s to World War I. The main objectives of the Progressive movement were addressing problems caused by industrialization, urbanization, immigration, and political corruption.
Therefore, the correct answer is option A.
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because the united states congress has been given the power to regulate interstate commerce, the states are limited in their ability to regulate or tax such commerce between them.
David Ricardo's iron law of wages stated that : wage increases would not raise the standard of living for poor families
Because when the wage increases, the price of the commodities tend to also be increased, which cause not change for the standard of living
hope this helps
C)a large amount of people