At the United Nations Rio conference in 1992, governments formally accepted nine Major Groups as 'stakeholder' categories. The designated Major Groups were Women, Children and Youth, Indigenous Peoples, Non-Governmental Organizations, Local Authorities, Workers and Trade Unions, Business and Industry, Scientific and Technological Community, and Farmers. Two decades later, the importance of effectively engaging these nine sectors of society was reaffirmed by the Rio+20 Conference. However that conference added other stakeholders, including local communities, volunteer groups and foundations, migrants and families, as well as older persons and persons with disabilities. Subsequently, governments also added as stakeholders private philanthropic organizations, educational and academic entities and other stakeholders active in areas related to sustainable development. The 'Major Groups' designation is now cited as 'Major Groups and Other Stakeholders'.