It was the CSS Virginia that was the Confederacy's first ironclad vessel, built on the hull of the Union ship, USS Merrimack, although it turned out to not be terribly useful in wartime.
He challenge the medieval view of science because he insisted that the sun was the center of the Universe
Because of religious teachings, most people in medieval period thought that earth was the Center of the Universe. After years of observation, Copernicus theorized otherwise
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Answer: trenches. WW1 is famous for its trench warfare- a dangerous form of warfare that resulted in a lot of deaths as stalemates lasted for months.
