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 certificate General was appointed with overall responsibility and the country was divided into registration districts, each controlled by a superintendent registrar. Under this system, all marriage ceremonies have been certified by the issuing of a marriage certificate whose details are also stored centrally. From that date, marriage ceremonies could be performed, and certificates issued either by a clergyman of the Church of England, in a parish church, or by a civil registrar in a civil register office. Marriages performed according to the ceremonies of Quakers and Jews also continued to be recognised as legal marriages, and certificates were issued. The marriage