| an American engineer and inventor who developed the first steamboat and designed the first submarine |
well-known scientist and politician remembered for his discoveries in electricity |
American inventor and scientist most known for the development of the phonograph and light bulb |
American painter and inventor that created the Morse code system |
German-Jewish immigrant who founded the first blue jean manufacturer |
| a toy inventor that is most famous for the Etch-a-Sketch |
American engineer and inventor most known for inventing air conditioning |
American inventor most known for the invention of the cotton gin |
Polish woman physicist and chemist who discovered radium and polonium |
Scottish pharmacologist and biologist that discovered penicillin |