In 1931, the severity of the depression increased when the Federal Reserve Board raised interest rates.

The costliest battle in the history of the United States Marines Corps was The Battle of Iwo Jima.

Washington Conference, also called Washington Naval Conference (1921–22), was an international conference called by the United States to limit the naval arms race and to work out security agreements in the Pacific area.

The Kellogg–Briand Pact is a 1928 international agreement in which signatory states promised not to use war to resolve "disputes or conflicts of whatever nature or of whatever origin they may be, which may arise among them".

The Battle of the Coral Sea in 1942 was a major naval battle between the Imperial Japanese Navy (IJN) and naval and air forces from the United States and Australia, taking place in the Pacific Theatre of the Second World War.