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Henry bessemer invented the bessemer process to cheaply mass produce steel. This was important because it made steel cheap and easier to get which ment that eventualy cars buildings and trains were cheaper and most people could buy them.
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Patented by lucien smith. It could be used in war and to fence in land for cattle.
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Air brakes were invented by George Westinghouse to brake trains with copressed air. This was much better then the system before it which acted like emergency brakes.
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thomas edison patented the light bulb. It put out much more light then before. uses a melat filment and electicity.
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sir hiram maxim invented the first self powered machine gun. This enabled people to put more rounds down range meaning more chance to hit something
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Alternating current patented by westinghouse it was much better then dc. It could travel longer and with more power. it would give the power to build factories
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invented by tesla it was origannaly wireless telaragh machine.