The expansion of which infrastructure caused the growth of the oil and steel industries?

Railroads

Explanation: Railroads made it significantly easier to get raw materials (such as oil and steel) across the country. If you want a specific example, look at the Trans-Continental Railroad

frederick william of brandenburg-prussia trained his son, frederick, to be a hardy soldier. but frederick disliked rifle shooting and horseback riding. unlike his father, he was interested in french literature. he enjoyed poetry and music and, like some others of the enlightenment, he scoffed at religion. his father thought him soft, frivolous and unmindful of his duties. and when frederick refused to put his signature on a right to succession, for a few moments his father strangled him.

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