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question is all way down.

(1)the history of books is marked by many important milestones. (2)among the earliest of these would have to be the establishment of the first public library. (3)this event took place in athens, greece, in 540 b. c. (4)books then had to be copied by hand until 1456, when another important milestone was reached. (5)the german inventor johann gutenberg built a printing press capable of producing multiple copies of one book. (6)after printing presses were established, books spread everywhere. (7)by the 1800s, american publishing houses were pumping out works to satisfy a reading-hungry public. (8)an example of a best-selling book was uncle tom's cabin, which was published in 1852 and sold seven million copies. (9)the next chapter in the history of books began in the 1980s, with the publishing of books on audiotape. (10)today, we even have electronic books that can be downloaded from the internet.

q. the time transition used for the last important event discussed in this passage is: (type one word. then click go.)