I've never been divorced, but in some countries it is used to allow a former partner to marry another person. 
same here I have never been divorced or married
Yeah divorcing is legal dissolution of marriage which disolve the bods of matrimony. 
so i guess to divorce it must be legal
It is and people do it for several reasons such as incompatibility, lack of Independence or personality classes. 
I imaging divorce has been around only a short time
(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
that the marriage laws require a divorced wife who wishes to return to a husband must first marry another man, and then divorce that second spouse. "The Oolah" is the person who performs that role. However, the Oolah seeks to retire from his job to marry for real, yet he has one more professional marriage to accomplish first.
The Oolah's most popular comedic lines included "think twice about divorcing once", and "I have been married a hundred and fifteen times and not once deceived. I