Common Sense, Paine’s pro-independence monograph
published anonymously on 10 January 1776, spread quickly among literate
colonists. Within three months, 120,000 copies are alleged to have been
distributed throughout the colonies, which themselves totaled only four
million free inhabitants, making it the best-selling work in
18th-century America. Its total sales in both America and Europe
reached 500,000 copies. It convinced many colonists, including George
Washington and John Adams, to seek redress in political independence
from the Kingdom of Great Britain, and argued strongly against any
compromise short of independence. (Summary from Wikipedia)

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The ZyngRule audiobook reader has the following features:

* Table of Contents
* Pocket Guard Screen Lock: a translucent overlay prevents accidental button presses while your iphone is placed in your pocket
* 6 bookmarks
* 10-second rewind and fast-forward
* Sound effects