PLZZ HELP Kelvin Doe—A Young Engineer

What is the best sentence to show an implicit detail in this paragraph?
Because of his work, Kelvin was invited to MIT. Kelvin's scientific inventions improved the lives of teens and adults in his village. Kelvin's desire to help his neighbors made him a hero. With the battery Kelvin made, the possibilities were endless.

Kelvin's desire to help his neighbors made him a hero.

no statements but ok.

the statement that best describes the idea of manifest destiny that was used in the 19th century would be that "it was fate that the united states would continue to  expand westward," since people thought the us was "destined" to do so. 

i just did something on this guy a few days a go give me two minutes to find it in my notes.