The Industrial Revolution, which was the transition from hand production methods to machines occurred in Europe and the US between 1820 and 1840, brought as result the use new chemical and iron production processes, the use of steam power, the development of machine tools as well as the rise of the factory system.
The effects of this Industrial Revolution were notable in Northwest of America, specifically in Boston, New York City, and Philadelphia, where such industrial development transformed them into industrial cities and growing commercial centers.
<em>Some of the features which showed that such Northwest cities were becoming an urban society were the dense network of railroads, canals present in them as well as the telegraph network which linked the nation economically.
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The Muckrakers were a group of journalists and writers that provided an important spark and ignited the Progressive movement. They were interested in exposing the problems in American society and urged the public to identify solutions.
They helped initiate the Progressive Era by analyzing if those bad conditions were linked to corrupt politics, poor working conditions in factories, bad living conditions of the working class and others.
They sparkled this analysis into people who read the newspapers and that wanted to change for their lives and because of that, an agenda was created.
Answer:
D. he was helping another country get rid of its king
Explanation: