The US responded to Japan’s expansion into China and French Indochina in the late 1930s by

As Japan expanded into China and then French Indochina, the United States responded with economic sanctions, including restrictions on trade and an oil embargo. These measures were intended to pressure Japan to stop its expansion, rather than to send peacekeepers or organize an Allied attack. D, placing an embargo on shipments to Japan, is the closest choice, though the restrictions targeted particular goods rather than literally every shipment.

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