inability of a spouse to perform the marital obligations may constitute a ground for divorce, legal separation or annulment. The latter two options are more prevalent in countries where the dominant religion is Roman Catholicism, some of which introduced divorce only recently (i.e. Italy in 1970, Portugal in 1975, Brazil in 1977, Spain in 1981, Argentina in 1987, Paraguay in 1991, Colombia in 1991, Ireland in 1996, Chile in 2004 and Malta in 2011). In recent years, many Western countries have adopted no-fault divorce. In some parts of the world, the formal dissolution of a marriage is complicated by the payments and goods which have been exchanged between families (this is common where marriages are arranged). This often makes it difficult to leave a marriage, especially for the woman: in some parts of Africa, once the bride price has been paid, the wife is seen as belonging to the husband and his family; and if she wants to leave, the husband may demand back the bride price that he had paid to the girl's family. The girl's family often cannot or does not want to pay it back. Regardless of legislation, personal relations between spouses may also be influenced by local culture and religion. Minimum age There is often a minimum legal marriageable age. The United Nations Population Fund stated the following: "In 2010, 158 countries reported that 18 years was the minimum legal age for marriage for women without parental consent or approval by a pertinent authority. However, in 146 countries, state or customary law allows girls younger than 18 to marry with the consent of parents or other authorities; in 52 countries, girls under age 15 can marry with parental consent. In contrast, 18 is the legal age for marriage without consent among males in 180 countries. Additionally, in 105 countries, boys can marry with the consent of a parent or a pertinent authority, and in 23 countries, boys under age 15 can marry with parental consent." Procreation In Western countries, spouses sometimes choose not to have children. In some other parts of the world, there are greater expectations that heterosexual couples will procreate. In some cultures and religions, it is an obligation. In northern Ghana, for example, the payment of bride price signifies a woman's requirement to bear children, and women using birth control are at risks of threats and coercion. Choosing a spouse There are many