The most difficult Americans riddlesCulture quiz
Who is that?
Martin Luther King
Armstrong experienced growing problems with his lips and fingers, which were aggravated by his unorthodox playing style. As a result, he branched out trumpeting, developing his vocal style and making movie and radio appearances.
How did John Davidson Rockefeller get rich?
in the oil industry
by selling supplies to the army
by mining diamonds and gold
by building railroads
John Davison Rockefeller was the founder of the Standard Oil Company, which dominated the oil industry in the U.S. As kerosene and gasoline grew in importance, Rockefeller's wealth soared, and he became the world's richest man and first American worth more than a billion dollars.
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