D Cost of American Wars War name Cost of the war Cost as a percent of annual GDP Revolutionary War US $ 2.2 billion (in 2002 dollars) 63% War of 1812 US $ 1.1 billion 13% Mexican War US $ 1.6 billion 3% Civil War US $ 62 billion 104% Spanish American War US $ 9.6 billion 3% World War I US $ 190. 6 billion 24% World War II US $ 2.9 trillion 103% Korean War US $ 335.9 billion 15% Vietnam War US $ 494.3 billion 12% First Gulf War US $ 76.1 billion 1% Notes: ① GDP → 国民生产总值 ② 1 billion =' 1,000,000,000             '      ③1 trillion = 1,000,000,000,000 69. Which wars cost more than a year’s worth of the GDP? A. First Gulf War and World War I                           B. The Civil War and World War II C. World War II and Revolutionary War                    D. Mexican War and Civil War 70. The American annual gross domestic product in 1951 was _________. A. 2.239 trillion            B.2.9 trillion          C. 3, 25 trillion      D. 76.1 billion 71. Which of the following is NOT true? A. Mexican War cost more than War of 1812. B. First Gulf War cost the least in term of the percentage of the annual of GDP. C. World War II cost more than Korean War. D. Mexican War cost as much money as Spanish American War.