Washington Naval Conference resulted in a treaty.
Washington Naval Conference . Held at Memorial Continental Hall in downtown Washington DC , it resulted in three major treaties : Four-Power Treaty , Five-Power Treaty ( more commonly known as the Washington Naval Treaty ) , the Nine-Power Treaty , and a number of smaller agreements . These treaties preserved peace during the 1920s but were not renewed in the increasingly hostile world of the Great Depression . The Washington Naval Treaty , also known as the Five-Power Treaty , and including the `` Four-Power Treaty '' and the `` Nine-power Treaty '' was a treaty among the major nations that had won World War I , which agreed to prevent an arms race by limiting naval construction .