It was formally founded in 1931 with the Statute of Westminster.
One member of this organization officially joined it under the leadership of John Curtin. The first meeting of Foreign Ministers of this organization established the Colombo Plan for Southeast Asian economic development. The Singapore Declaration set out this organization's commitment to racial equality. Changes to the laws governing the (*) succession of the head of this organization must be approved by all realms in this organization. The Edinburgh Declaration redefined the rules of joining this organization after Mozambique joined it in 1995. It was formally founded in 1931 with the Statute of Westminster. For 10 points, name this organization, which includes Australia and Canada, consisting of mostly states governed by a former English-speaking Empire.
One member of this organization officially joined it under the leadership of John Curtin.
Commonwealth of Nations [accept British Commonwealth; prompt on partial answers]