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04-Oct-2019 14:48

Generally, during much of recorded history of humans in civilization, and into the Middle Ages in Europe, weddings were seen as business arrangements between families, while romance was something that happened outside of marriage discreetly, such as covert meetings.

From about 1700 a worldwide movement perhaps described as the "empowerment of the individual" took hold, leading towards greater emancipation of women and equality of individuals.

The calculation method does not always result in 280 days because not all calendar months are the same length; it does not account for leap years.Births rarely occur on a due date, but they are clustered around due dates.A study of singleton live births in the US came to the result that childbirth has a standard deviation of 14 days when gestational age is estimated by first trimester ultrasound, and 16 days when estimated directly by last menstrual period.The result is approximately 280 days (40 weeks) from the start of the last menstrual period.Another method is by adding 9 months and 7 days to the first day of the last menstrual period.

The calculation method does not always result in 280 days because not all calendar months are the same length; it does not account for leap years.Births rarely occur on a due date, but they are clustered around due dates.A study of singleton live births in the US came to the result that childbirth has a standard deviation of 14 days when gestational age is estimated by first trimester ultrasound, and 16 days when estimated directly by last menstrual period.The result is approximately 280 days (40 weeks) from the start of the last menstrual period.Another method is by adding 9 months and 7 days to the first day of the last menstrual period.Historically, marriages in most societies were arranged by parents and older relatives with the goal not being love but legacy and "economic stability and political alliances", according to anthropologists.