Iron and steel--by the late 19th century the US became the world leader in iron ore and steel exports.
Access to natural resources and a lot of labor, the US was able to access iron ore which was a hot commodity and necessary for creating steel. If countries had the ability to create steel then they would just buy the iron ore. If they could not produce steel, then US Steel was the export for them. Steel industries dominated states like Pennsylvania, Ohio, Michigan, and Indiana.
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Because to be honest the war had nothing to do with America, we were pracacing what was called isolationism and we only started fighting after Germany started actively attacking our ships
Great Britain and the British Empire except Scotland started in 1752 and they adopted the Gregorian calendar and 1952 also
Islam is tolerant of people with other religious beliefs.