This is what we found on Wikipedia regarding the Divorce:

Divorce (also known as dissolution of marriage) is the process of terminating a marriage or marital union. Divorce usually entails the canceling or reorganising of the legal duties and responsibilities of marriage, thus dissolving the bonds of matrimony between a married couple under the rule of law of the particular country or state. It can be said to be a legal dissolution of a marriage by a court or other competent body. It is the legal process of ending a marriage.

Divorce laws vary considerably around the world, but in most countries, divorce is a legal process that requires the sanction of a court or other authority, which may involve issues of distribution of property, child custody, alimony (spousal support), child visitation / access, parenting time, child support, and division of debt. In most countries, monogamy is required by law, so divorce allows each former partner to marry another person.

Divorce is different from annulment, which declares the marriage null and void, with legal separation or de jure separation (a legal process by which a married couple may formalize a de facto separation while remaining legally married) or with de facto separation (a process where the spouses informally stop cohabiting). Reasons for divorce vary, from sexual incompatibility or lack of independence for one or both spouses to a personality clash or infidelity.

The only countries that do not allow divorce are the Philippines and the Vatican City. In the Philippines, divorce for non-Muslim Filipinos is not legal unless one spouse is an undocumented immigrant and satisfies certain conditions. The Vatican City is a theocratic state ruled by the head of the Catholic Church, and does not allow for divorce. Countries that have relatively recently legalized divorce are Italy (1970), Portugal (1975, although from 1910 to 1940 it was possible both for the civil and religious marriage), Brazil (1977), Spain (1981), Argentina (1987), Paraguay (1991), Colombia (1991; from 1976 was allowed only for non-Catholics), Andorra (1995), Ireland (1996), Chile (2004) and Malta (2011).