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.
Portuguese Empire
The loss of colonies was one of the reasons that contributed to the end of the personal union with Spain. In 1640 John IV was proclaimed King of Portugal and the Portuguese Restoration War began. Even before the war's final resolution, the crown established the Overseas Council, conceived in 1642 on the short-lived model of the Council of India (1604–1614), and established in 1643, it was the governing body for most of the Portuguese overseas empire. The exceptions were North Africa, Madeira, and the Azores. All correspondence concerning overseas possessions were funneled through the council. When the Portuguese court fled to Brazil in 1807, following the Napoleonic invasion of Iberia, Brazil was removed from the jurisdiction of the council. It made recommendations concerning personnel for the administrative, fiscal, and military, as well as bishops of overseas dioceses. A distinguished seventeenth-century member was Salvador de Sá.
In 1661 the Portuguese offered Bombay and Tangier to England as part of a dowry, and over the next hundred years the English gradually became the dominant trader in India, gradually excluding the trade of other powers. In 1668 Spain recognized the end of the Iberian Union and in exchange Portugal ceded Ceuta to the Spanish crown.