Question: What was the nationality of the philosopher whose philosophy Harry Victor Jaffa developed an American application of?
Sentence (from "Graham Oppy"): He currently holds the posts of Professor of Philosophy and Associate Dean of Research at Monash University and serves as Associate Editor of the Australasian Journal of Philosophy, and serves on the editorial boards of Philo, Philosopher's Compass, Religious Studies, and Sophia.
Relevant evidence: No