支撑日本的支是一个名词，破案了，是个浪友

簡單搬運維基

&rt; Japan's 1937 attack on China was condemned by the U.S. and by several members of the League of Nations, including Britain, France, Australia and the Netherlands.

&rt; Beginning in 1938, the U.S. adopted a succession of increasingly restrictive trade restrictions with Japan. This included terminating its 1911 commercial treaty with Japan in 1939, further tightened by the Export Control Act of 1940.

&rt; it committed to help the British and Chinese through loans of money and materiel, and pledged sufficient continuing aid to ensure their survival. Thus the United States slowly moved from being a neutral power to one preparing for war.

&rt; In mid-1940 Roosevelt moved the U.S. Pacific Fleet to Pearl Harbor, Hawaii, to deter Japan.

&rt; The United States embargoed scrap-metal shipments to Japan and closed the Panama Canal to Japanese shipping.[11] This hit Japan's economy particularly hard because 74.1% of Japan's scrap iron came from the United States in 1938. Also, 93% of Japan's copper in 1939 came from the United States.

&rt; the U.S. froze Japanese assets on July 26, 1941, and on August 1 established an embargo on oil and gasoline exports to Japan.[15][16][17] The oil embargo was an especially strong response because oil was Japan's most crucial import, and more than 80% of Japan's oil at the time came from the United States.[18]

Chinairl