A hinny is the offspring of which two animals?

Which highly prized form of carbon is the hardest natural material? Which hiking route runs from Maine to Georgia? Thimphu is the capital of which Himalayan kingdom? Which word names both a Hindu holy man and a Yankees great? Which historic Nashville building, a former home of the Grand Ole Opry, was renovated and reopened in 1994? A historic flight in which type of craft went over Paris on November 21, 1783? A historic New York skyscraper was completed in 1913 to house the headquarters of which five-and-dime store? A History Channel show on which disease noted baseball-sized black swellings on the neck in 1347?