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1. This statesman, politican, scholar, inventor, and one of early presidents of USA invented the swivel chair, the spherical sundial, the moldboard plow, and the cipher wheel.





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  • By: guest on 02 Jun 2017 01.22 am
    Thomas Jefferson (April 13, 1743 - July 4, 1826) was the third President of the United States (1801-1809) and the principal author of the Declaration of Independence (1776).
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