Who were Andrew Carnegie, J. P. Morgan, and John D. Rockefeller and what industries did they control

Carnegie was able to monopolize the steel industry from 1889 to around 1901 when he sold his business to J.P. Morgan, the U.S.'s most prominent banker. John D. Rockefeller founded the Standard Oil Company, which dominated the oil industry and was the first great U.S. business trust.

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which time period is this? or is this story fictional, i'm going to need more info to answer this question

silk

indigo  

rice

all the other answers are wrong