Answer:
In July 1941, the United States, together with its allies decided to freeze all Japanese assets and stop trading oil Japan so fiercely needed
Explanation:
In July, 1941 United States President Franklin Roosevelt together with Britain and the Netherlands seizes all Japanese assets on its countries as the Japanese move to occupy French Indochina. They continued to move to the South towards Singapoure and into China.
Roosevelt persuaded the allies to freeze Japanese assests needed for most of the Japanese overseas trade. They also took most of the control of the oil they needed for the war effort. The former action angered the Japanese who quickly saw their energy demands compromised as the oil reserves were insufficient. Japan's immediate answer was to continue expanding over Southeast Asia as the oil embargo never saw a turning back.
They then went to seize oil in Asia thus expanding conflict over the Pacific.
