1. Prenuptial agreement

2. A prenuptial agreement is a contract entered into prior to marriage, civil union or any other agreement prior to the main agreement by the people intending to marry or contract with each other. 

3. The content of a prenuptial agreement can vary widely
The content of a prenuptial agreement can vary widely. They may also include terms for the forfeiture of assets as a result of divorce on the grounds of adultery.

4. In some countries, including Belgium and the Netherlands, the prenuptial agreement not only provides for the event of a divorce, but also to protect some property during the marriage, for instance in case of a bankruptcy.

5. Many countries, including Canada, France, Italy, and Germany, have matrimonial regimes, in addition to, or some cases, in lieu of prenuptial agreements.

6. India
In India, prenuptial agreements are very rare and do not have any governing laws. However, with rising divorce rates people are showing increasing interest in prenups. Some lawyers are of the opinion that prenups don't have legal sanctity in India. However, some form of contract is signed in some cases, usually among affluent citizens.

7. United Kingdom
Prenuptial agreements have historically not been considered legally valid in the United Kingdom. 

8. The USA
In the United States, prenuptial agreements are recognized in all fifty states and the District of Columbia. Prenuptial agreements in all U.S. states are not allowed to regulate issues relating to the children of the marriage, in particular, custody and access issues. The reason behind this is that matters involving children must be decided in the children's best interests.

9. China
Prenuptial agreements are now enforceable in China. Article 19 of the 2001 Marriage Law specifies that:
The agreement reached between the husband and wife on the property acquired during the period in which they are under contract of marriage and on the prenuptial property is binding on both parties.
If husband and wife agree, as is known to the third party, to separately possess their property acquired during their marriage life, the debt owed by the husband or the wife to any other person, shall be paid off out of the property separately possessed by him or her.