Take the following as truth: Named after the hill on which it stands and which in the Middle Ages was surrounded by a malarial swamp, the Vatican has been a papal residence for over 600 years, but a sovereign state independent of Italy only since the Lateran Treaty signed by Mussolini in 1929.
Then the following statement: "During the early 20th century, Mussolini declined to sign the Lateran Treaty. " is true, false, or inconclusive?