Succession to the French throne
In 1791 the French National Assembly drew up a new, written Constitution to which the King gave his assent, and which governed France for the last year of the 18th century monarchy. For the first time it was necessary to define formally, as a matter of statutory constitutional law, the system of succession, and the titles, privileges and prerogatives of the Crown. In debating the succession to the Crown the contemporary understanding of the law of succession was publicly clarified. It rebutted the assertion by some that the claim by the Spanish line is a late construct, made to satisfy the ambitions of princes deprived of other claims. Indeed, it is evident that the issue of the rights of the Spanish line to the French crown remained an important constitutional issue.
French Revolution
Even before the Flight to Varennes, the Assembly members had determined to debar themselves from the legislature that would succeed them, the Legislative Assembly. They now gathered the various constitutional laws they had passed into a single constitution, and submitted it to the recently restored Louis XVI, who accepted it, writing "I engage to maintain it at home, to defend it from all attacks from abroad, and to cause its execution by all the means it places at my disposal". The King addressed the Assembly and received enthusiastic applause from members and spectators. With this capstone, the National Constituent Assembly adjourned in a final session on 30 September 1791.