The term "the Commonwealth" refers to a political association of 54 member states, mainly former colonies of the British Empire. Synonyms for this term include Commonwealth of Nations, British Commonwealth, and Commonwealth realms. Other related expressions include the Commonwealth Games, a multi-sport event held every four years, and Commonwealth Day, an annual celebration observed on the second Monday in March. The Commonwealth is an organization that promotes democracy, human rights, and economic development among its members, who collectively represent a diverse array of cultures and traditions. Despite its historical ties to Britain, the Commonwealth is a modern and independent institution that plays a crucial role in international relations today.