Answer: The correct answer is : The United States took the initiative through Republican Senator Borah proposing disarmament and ending the costly rivalry of naval construction between the United States, Japan and Britain and thus being able to curb the arms race.
Explanation: The conference was organized by President Harding of the United States. The United States, Japan, France, China, Great Britain, Italy, Belgium, the Netherlands and Potugal attended. From there came three treaties: Treaty of the four powers, treaty of the five powers and treaty of the nine powers. The main objective of the conference was to avoid the naval expansion of Japan in the Western Pacific. The aim of the Japanese was to sign a naval treaty with Britain and the United States.