I want to know the answer to the following question:
What did the United States place on Japans war efforts?
All the background I'm provided with is that "With the occupation of French Indochina in the years of 1940–41, and with the continuing war in China, the United States placed embargoes on Japan of strategic materials such as scrap metal and oil, which were vitally needed for the war effort.". Is that enough to answer the question?
Answer: yes