Answer:
It has changed mechanical engineering and helped other inventions be created.
Explanation:
Ida Tarbell (1857 – 1944) pertained to the generation of journalists called muckrackers, who investigated and denounced corruption and unethical practices perpetrated by businesses and government officials during the Progressive Era (late 19th century and early 20th century) in the US.
She published <em>"The History of the Standard Oil Company</em>" in 1904 through which she set a precedent, and many others subsequently started to gather information and to denounce the abuses committed by companies with absolute market power (monopolies) or by trusts operating in olipolistic markets. The Sherman Antitrust Act had been recently passed in 1890 but firms had been able to freely limit competitiveness during the whole 19th century. Tarbell denounced the manner in which certain corporations gathered enormous fortunes by using anti-competitive practices, possible due to their dominant position in the markets, and also impeding others to participate on the profits of the industry.
Such monopolistic practices enlarged the inequality within the industry and also in the whole society where large fortunes started to appear while most people were humble factory workers who earned very modest salaries.
<span>Why study history? The answer is because we virtually must, to gain access to the laboratory of human experience. When we study it reasonably well, and so acquire some usable habits of mind, as well as some basic data about the forces that affect our own lives, we emerge with relevant skills and an enhanced capacity for informed citizenship, critical thinking, and simple awareness. The uses of history are varied. Studying history can help us develop some literally “salable” skills, but its study must not be pinned down to the narrowest utilitarianism. Some history—that confined to personal recollections about changes and continuities in the immediate environment—is essential to function beyond childhood. Some history depends on personal taste, where one finds beauty, the joy of discovery, or intellectual challenge. Between the inescapable minimum and the pleasure of deep commitment comes the history that, through cumulative skill in interpreting the unfolding human record, provides a real grasp of how the world works.—Peter Stearns</span>
The answer it’s number 4 “implied power”
