Most countries criminalized marital rape from the late 20th century onward—very few legal systems allowed for the prosecution of rape within marriage before the 1970s. Criminalization has occurred through various ways, including removal of statutory exemptions from the definitions of rape, judicial decisions, explicit legislative reference in statutory law preventing the use of marriage as a defense, or creation of a specific offense of marital rape. In many countries, it is still unclear whether marital rape is covered by the ordinary rape laws, but in some it may be covered by general statutes prohibiting violence, such as assault and battery laws.