
 Roman numerals Summary 
  The Roman numeral system for representing numbers was developed around 500 B.C. As the Romans conquered much of the world that was known to them, their numeral system spread throughout Europe, where Roman numerals remained the primary manner for representing numbers for centuries. 
  Because the largest numeral used by the Romans was M, or 1000, it proved impractical to write extremely large numbers, such as 1,000,000, as a string of 1000 Ms. 
  Roman numerals are commonly used today in numbered lists (in outline format), clockfaces, pages preceding the main body of a book, chord triads in music analysis, the numbering of movie sequels, book publication dates, successive rulers with identical names, and the numbering of some sport events, such as the Olympic Games or the Super Bowls. 
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