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Two examples of the main ideas of the Renaissance were Rebirth and Rediscovery. Galileo Galilei was one of the most important people during the renaissance, due to his research into astronomy, physiscs, and engineering. Considered the "Father of Modern Science", Galileo is most well known for his discovery of the largest four of Jupiter's moons. He also was one of the driving forces behind the popularization of the idea of heliocentrism.
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A "Red Scare" is the promotion of a widespread fear of a potential rise of communism or anarchism by a society or state. The name refers to the red flags that the communists used. The term is most often used to refer to two periods in the history of the United States which are referred to by this name. Hope that helps!!!
The rail roads were the key of success to cattle ranchers because now they could load them on a train car and get them to the meat processers in half the tome and with less money therefore making more profit.
