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.
Portugal
Portugal as a country was established during the Christian "Reconquista" against the Moors who had invaded the Iberian Peninsula in 711 AD. Despite attempts at independence since its foundation as a county in 868, only after the Battle of São Mamede in 1128, where Portuguese forces led by Afonso Henriques defeated forces led by his mother, Teresa, the County of Portugal affirmed its sovereignty and Afonso styled himself Prince of Portugal. He would later be proclaimed King of Portugal at the Battle of Ourique in 1139 and was recognised as such, by neighbouring kingdoms, on the Treaty of Zamora, in 1143.