The 20th century began on 1 January 1901 and ended on 31 December 2000. It was the century that saw two world wars, the Soviet Union rise and fall, the coming of the telephone, sound recording, film and television, airplanes, atomic weapons, genetics and DNA, computers and electronics in general. Science and industrialization spread; medicine became more scientific. The human population increased more during this century than any previous one.
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