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1890: "stop sign" invented in Saugatuck, Connecticut 1903: Mary Anderson patents the "windshield wiper" 1904: automatic transmission invented in Boston, Massachusetts 1911: electric starter motors replace hand-cranks on automobile engines 1912: electric traffic lights invented in Salt Lake City, UT Which sector of the American economy was affected MOST by these inventions? A) agriculture B) communication C) manufacturing D) transportation

User Carleton
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D) Transportation bc it affects transport, duh?
User Klaus Groenbaek
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