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
Portugal traces its national origin to 24 June 1128, the date of the Battle of São Mamede. Afonso proclaimed himself "Prince of Portugal" after this battle and in 1139, he assumed the title "King of Portugal". In 1143, the Kingdom of León recognised him as King of Portugal by the Treaty of Zamora. In 1179, the papal bull Manifestis Probatum of Pope Alexander III officially recognised Afonso I as king. After the Battle of São Mamede, the first capital of Portugal was Guimarães, from which the first king ruled. Later, when Portugal was already officially independent, he ruled from Coimbra.