The Organisation for Economic Co-operation and Development (OECD) was established in 1961 to promote economic growth and world trade. Founded based on reforms of its predecessor, the Organisation for European Economic Co-operation and Development (OEEC), which was created in 1948, the OECD is made up of 36 member states that are committed to the market economy and democracy.
https://www.worldatlas.com/articles/list-of-oecd-countries.html

