 According to the 1939 Reports to the Annual National Convention of the American Legion, in 1936 1,467,639 tons of scrap metal from all foreign nations were exported to Japan while since 1937 Japan's dependence on the United States of America grew massively for war materials and supplies against China.The US contributed massively to the Japanese war economy in 1937 with 20.4% of zinc, 48.5% of engines and machinery, 59.7% of iron, 41.6% of pig iron, 60.5% of oil, 91.2% of automobiles and parts, 92.9% of copper of Japan were imported from the U.S. in 1937 according to a hearing by the United States Congress Senate Committee on Foreign Relations.From 1937 to 1940, the US exported a total of $986.7 million to Japan.