Q. 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.
A) Alexander Hamilton
B) George Washington
C) Thomas Jefferson
D) John Adams
โ Correct Answer: Thomas Jefferson
Exam Insight
Thomas Jefferson, the third U.S. president, was a brilliant inventor who contributed to the development of various technologies, including the swivel chair, moldboard plow, cipher wheel, and spherical sundial.