In response to Japan’s aggressive actions in the Pacific in the 1930s, the United States:

In response to Japan's aggressive actions in the Pacific during the 1930s, the United States took several measures. Initially, the U.S. adopted a policy of economic sanctions and embargoes against Japan. This included restrictions on the export of essential materials such as oil and steel, which were crucial for Japan's military operations. The goal was to curb Japan's expansionist activities without resorting to direct military confrontation.

Additionally, the United States increased its military presence in the Pacific region, including the reinforcement of bases in Hawaii and the Philippines. Diplomatic efforts were also made to negotiate with Japan, although these were ultimately unsuccessful.

These actions were part of a broader strategy to deter further Japanese aggression and to protect American interests in the Asia-Pacific region. The tensions between the two nations eventually culminated in the attack on Pearl Harbor in December 1941, which led to the United States' entry into World War II.