Sheng nu cites studies that show that women are now breaking the tradition of "mandatory marriage" to have fewer children or marry later on in life. Other typologically similar terms that are still used in the modern lexicon of other countries and cultures show the concept has existed in some cases as far back as the 16th century. The term spinster was used to describe unmarried or single women of a marriageable age. It wasn't until 2004 when the Civil Partnership Act replaced the word spinster with "single" in the relationship history section of marriage certificates in the UK. Subsequently, at the
Marriage license Netherlands and Belgium, couples intending to marry are required to register their intention beforehand, a process called "ondertrouw". In Mexico, only civil marriage is recognized as legal. Persons wishing to do so may also have a religious ceremony, but it has no legal effect and does not replace in any way the legal binding civil marriage. A civil wedding in Mexico is fully valid for legal purpose in the U.S. The Mexican civil registry does not issue marriage licences, it issues marriage certificates, because under Latin law, marriage is a legal right, not requiring a permit, marriages are performed without