The Republicans attempted to rule out the return of the House of Orange and cement their rule by constitutional prohibitions, like the Act of Seclusion (demanded by Cromwell, but not resisted by the Republicans). They were eventually unsuccessful in the crisis of the Rampjaar (Year of Disaster) of 1672, as the majority of the people turned to the Prince of Orange, William III, in the crisis. That brought about the fall of the De Witt-regime. Similarly, in the crisis of the French invasion of 1747, the Republican regime collapsed and brought about the installation of William IV as Stadholder. During the Anglo-French War (1778–1783), the internal territory was divided into groups: the Patriots, who were pro-French and pro-American and the Orangists, who were pro-British.