Share This Article 1. These islands were the only US territory occupied by the enemy during World War Two. Nihoa and Necker Islands Bikini and Cocos Islands The US Virgin Islands Attu and Kiska Islands 2. Aaron Burr held this office when he killed Alexander Hamilton in a duel. Vice-President Governor of New York Secretary of State Secretary of the Treasury 3. The U.S. government officially declared this weapon obsolete in 1911. The M1857 12-pounder “Napoleon” The Whitworth Rifle The Gatling gun The 10-pounder Parrot Rifle Loading …