From "amazon. com." encyclopedia britannica. encyclopedia britannica online school edition. encyclopedia britannica, inc., 2013. web. 10 jan. 2013. 'the kindle shakes up publishing' in 2007 amazon. com began to sell its own kindle e-readers, which energize the e-book market. in 2011 the company introduced a related low-cost tablet computer, the kindle fire, and by 2012, the kindle fire was estimated to constitute 50 percent of the tablets sold that used google's android mobile operating system. after its first full year of selling books in 1996, book publishers praised the new service as a great way to them clear their backlists of slow-selling books. however, with the introduction of the kindle, tensions began to build between publishers and amazon. com. the company wanted to sell new e-books for a fixed price, well below what new printed books sold for, prompting many complaints from the publishing industry. what is the central idea of this passage? (3 points) many readers buy and read books on e-readers, such as the kindle. book publishers were with how the kindle them sell books. at first, amazon and publishers agreed on how to sell e-books, but later they clashed. amazon's kindle e-reader debuted in 2007, and by 2012 it had become a popular product.