There was the development of Feudalism, The Crusades, The Magna Carta, The Hundred Years' War, The Black Death, and the disagreements between Popes and Kings.
In 1753, however, the Marriage Act, promoted by the Lord Chancellor, Lord Hardwicke, declared that all marriage ceremonies must be conducted by a minister in a parish church or chapel of the Church of England to be legally binding.
But when the empire collapsed, in the 5th century, church courts took over and elevated marriage to a holy union. As the church's power grew through the Middle Ages, so did its influence over marriage. In 1215, marriage was declared one of the church's seven sacraments, alongside rites like baptism and penance. But it was only in the 16th century that the church decreed that weddings be performed in public, by a priest, and before witnesses.