<P> Japan and the U.S. engaged in negotiations during the course of 1941 in an effort to improve relations . During these negotiations , Japan considered withdrawal from most of China and Indochina after drawing up peace terms with the Chinese . Japan would also adopt an independent interpretation of the Tripartite Pact , and would not discriminate in trade , provided all other countries reciprocated . However , these compromises in China were rejected by General Tojo , then War Minister . Responding to Japanese occupation of key airfields in Indochina ( July 24 ) following an agreement between Japan and Vichy France , the U.S. froze Japanese assets on July 26 , 1941 , and on August 1 established an embargo on oil and gasoline exports to Japan . 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 . </P>
<P> Japan and the U.S. engaged in negotiations during the course of 1941 in an effort to improve relations . During these negotiations , Japan considered withdrawal from most of China and Indochina after drawing up peace terms with the Chinese . Japan would also adopt an independent interpretation of the Tripartite Pact , and would not discriminate in trade , provided all other countries reciprocated . However , these compromises in China were rejected by General Tojo , then War Minister . Responding to Japanese occupation of key airfields in Indochina ( July 24 ) following an agreement between Japan and Vichy France , the U.S. froze Japanese assets on July 26 , 1941 , and on August 1 established an embargo on oil and gasoline exports to Japan . 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 . </P>
why did the us imposed an oil embargo on japan
why did the us imposed an oil embargo on japan
Japanese occupation of key airfields in Indochina ( July 24 ) following an agreement between Japan and Vichy France
Japanese occupation of key airfields in Indochina ( July 24 ) following an agreement between Japan and Vichy France