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1848: Niagara Falls stopped flowing for one day due to an ice jam. 1853: Elihu Thomson, electrical engineer and inventor whose discoveries in the field of alternating current led to the development of successful alternating current motors, was born. 1886: Dr. John Pemberton brewed the first batch of Coca Cola. 1927: For the first time an automobile, the "Mystery Sunbeam," exceeded 200 mph. 1932: Jack Benny debuted on radio. 1973: The U.S. withdrew from Vietnam. 1974: Mariner 10 took the first close-up pictures of Mercury. 1984: The Baltimore Colts moved to Indianapolis under the cover of darkness. 1999: The Dow Jones Industrial Average (DJIA) closed above 10,000 for the first time. 2000: The Patent and Trademark Office became the "United States Patent and Trademark Office.