Things such as electricity, petroleum and steel. The revolution was possible due to the availability of natural resources (petroleum), strong government, transportation methods, power supplies, and a high amount of laborers.
Specific people involved are Andrew Carnegie who dominated the steel industry and owned J.P Morgan; Alexander Bell who created the telegraph. There's also John D. Rockefeller who greatly influenced the oil industry and Cornelius Vanderbilt who use railroads to connect major cities.
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sparta
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there army was fierce and protective, and women had more freedom than in other poleis
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Because of the type of technology developed during the time.
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n 1849 California requested permission to enter the Union as a free state, potentially upsetting the balance between the free and slave states in the U.S. Senate. As part of the Compromise of 1850, the Fugitive Slave Act was amended and the slave trade in Washington, D.C., was abolished.
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