<P> Collins has said that there are also many parallels between the Roman Empire and the fictional nation of Panem . She describes the Hunger Games as "an updated version of the Roman gladiator games, which entails a ruthless government forcing people to fight to the death as popular entertainment ." Collins also explains that the name "Panem" came from the Latin phrase "Panem et Circenses", which means "Bread and Circuses" and refers to the strategy used by Roman emperors to appease the masses by providing them with food and entertainment . </P> <P> As with the previous books in the trilogy, Mockingjay contains 27 chapters, with nine chapters in each of the three parts . This structure, which Collins had previously used in her series The Underland Chronicles, came from Collins's playwriting background . This "three - act" structure is also apparent in the trilogy as a whole; Collins stated that she "knew from the beginning" that she was going to write a trilogy . </P> <P> The cover and title information was revealed by Scholastic on February 11, 2010 . The cover continues the previous books' theme on the symbol of peace . The novel's title comes from the hybrid birds of the same name that feature in the novels' storyline . As Publishers Weekly has stated, "the hybrid birds that are an important symbol--of hope and rebellion--throughout the books". Collins likens Katniss to a Mockingjay because both "should never have existed". </P> <P> Katniss, her sister Prim, and her friends Finnick and Gale all reluctantly adjust to a highly structured life in the underground District 13, which has been spearheading the rebellion in Panem . Feeling manipulated, Katniss eventually agrees to act as "the Mockingjay"--the symbol of the rebellion--but only on the condition that District 13's President Alma Coin grant immunity to all of the surviving Hunger Games tributes, including Katniss's friend Peeta Mellark and Finnick's lover Annie Cresta . Coin, however, insists on flipping for Katniss's other major demand - the right to personally execute Panem's President Snow . </P>

How many words are in the book mockingjay