Arkansas's Boston Mountains are the highest part of which highland region?

Which Dutch master painted "Aristotle with a Bust of Homer" in 1653? Aristotle praised which Greek physician, who is often called the father of medicine? The philosopher Aristotle was a tutor to which young future conqueror? Arizona's state motto, "Ditat Deus," means "___ enriches." Which former head of the Arkansas Department of Health became U.S. Surgeon General in 1993? Which Arkansas senator, who served from 1945 to 1974, sponsored a famous program of international educational exchanges? Which five-sided building in Arlington County, Virginia, is one of the world's largest office buildings? Arlington House was the family mansion of which Confederate general until the U.S. government confiscated it in 1864?