The Four-Power Treaty was a treaty signed by the United States, United Kingdom, France and Japan at the Washington Naval Conference on 13 December 1921.
Five power treaty
Five-Power Treaty, was a treaty signed during 1922 among the major nations that had won World War I, which agreed to prevent an arms race by limiting naval construction.
Nine power treaty
was a 1922 treaty affirming the sovereignty and territorial integrity of China as per the Open Door Policy.
its purpose was to generate revenue for the federal government (to run the government and to pay the interest on its debt), and also to act as a protective barrier around newly starting domestic industries
U.S. becoming pacifists
Pacifism is opposition to war, militarism, or violence.
Kellogg-brand peace act
The Kellogg–Brand 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".