Same-sex marriage is marriage between two persons of the same biological sex or social gender. Supporters of legal recognition for same-sex marriage typically refer to such recognition as marriage equality.
Since 2001, ten countries have begun allowing same-sex couples to marry nationwide: Argentina, Belgium, Canada, Iceland, the Netherlands, Norway, Portugal, Spain, South Africa, and Sweden. Same-sex marriages are also performed and recognized in Mexico City and parts of the United States. Some jurisdictions that do not perform same-sex marriages recognize same-sex marriages performed elsewhere: Israel, the Caribbean countries of the Kingdom of the Netherlands, parts of the United States, and all states of Mexico.
The introduction of same-sex marriage has varied by jurisdiction, resulting from legislative changes to marriage laws, court challenges based on constitutional guarantees of equality, or a combination of the two. In some countries, allowing same-sex couples to marry replaced a previous system of civil unions or registered partnerships.
Happy couple after being married in Spain
The recognition of such marriages is a civil rights, political, social, moral, and religious issue in many nations. The conflicts arise over whether same-sex couples should be allowed to enter into marriage, be required to use a different status (such as a civil union, which either grant equal rights as marriage or limited rights in comparison to marriage), or not have any such rights. A related issue is whether the term marriage should be applied