Inventions That Shook the World
The 1900s
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The first decade of the 1900s ushers in crucial inventions that will help shape the rest of the century. Communication gets a boost as a voice is transmitted wirelessly by radio for the first time. The vacuum cleaner stops rugs and carpets from taking a beating, and two brothers, the Wright , apply their skills as bicycle mechanics to build and fly the world's first airplane.