D.at John Hopkins University
explanation: He pioneered at the concept of the modern research university in the US in 1876 the first separate graduate was established at John Hopkins University!
Philosopher who influenced the Founding Fathers and the Constitution. The Founding Fathers were heavily influenced by French philosopher Charles Secondat, Baron de Montesquieu when drafting the Constitution, most notably in connection with the separation of powers.
you can try to limit your time for other activities to make space for another one
The answer would be family