Carnegie created a monopoly and he did this by investing in new technology which helped him grow his steel corporation. He went to other factories took their ideas and incorporated them into his. He also bout other companies that would help his own companies. In growing his monopoly he used vertical integration, he combined all of his companies into one large one which he named Carnegie Steel. He had the raw materials, his own manufacturing sites and steel mills and a way to transport his product. This is vertical integration, get the materials, make the steel, and ship it.
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There were several changes during and after the war that the government made. ... During the war, the government took away a few of the rights that people had. Congress passed the Espionage and Sedition Act in 1917 which limited their freedom of speech and freedom of press to say anything against the war.
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I don´t know what marshall plan lol u need to explain
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