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Computer Science Civil Engineering Chemical Engineering Agricultural Engineering Mechanical Engineering Electronics and Communication
Inventions Section - 1 :: Discussion
| 6. | 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. | George Washington | |
| B. | Alexander Hamilton | |
| C. | John Adams | |
| D. | Thomas Jefferson | |
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