Within individual countries, examples of legislation pertaining to, and establishing guidelines for, the implementation and collection of child maintenance include the 1975 Family Law Act (Australia), the Child Support Act (United Kingdom) and the Maintenance and Affiliation Act (Fiji). Child support in the United States, 45 C.F.R. 302.56 requires each state to establish and publish a Guideline that is presumptively (but rebuttably) correct, and Review the Guideline, at a minimum, every four years. Child support laws and obligations are known to be recognized in a vast majority of world nations, including the majority of countries in Europe, North America and Australia, as well as many in Africa, Asia and South America.