Lisbon Regicide
The assassination of King Carlos and the Prince Royal was the effective end of a constitutional monarchy in Portugal (later confirmed by the 5 October 1910 revolution). The regime functioned for another 33 months with growing agitation and demands for reform (although considerably less than in the future First Republic). It cannot be denied that the weak and permissive attitude in the Government of Acclamation was an incentive for the Republican Party to attempt another coup. The assassinations did not change the system of government; instead, they delayed the change.
History of Portugal (1777–1834)
In Brazil, Pedro faced other challenges to his newborn country; the people clearly did not wish to return to colonial status and subservience to the politics and economy of the much smaller kingdom of Portugal. The Brazilian constitution prohibited the Emperor from subsuming another crown; this fact obliged Pedro to choose between Portugal or Brazil. Pedro, a pragmatic politician, tried to find a solution that would reconcile the desires of the liberal, moderate and absolutist elements in the debate, and eventually chose to abdicate as king of Portugal (28 May 1826) in favor of his eldest daughter Princess Maria da Glória, who was seven years old at the time. The abdication was conditional: Portugal should receive a new Constitution, i.e., the 1826 Charter, and his brother Miguel, exiled in Vienna, was to marry the Princess when she came of age. The Constitution was not popular with the absolutists (who wanted Prince Miguel to govern as an absolute monarch), but the liberal "Vintistas" also did not support the Charter (which was imposed by the King); moderates bided their time as a counter-revolution was slowly building.