History of Portugal (1834–1910)
Militant Republicans and their allies in the Carbonária were not willing to remain in the shadows of the constitutional monarchy. Between 4–5 October 1910, members of the Carbonária, republican youth, and elements of the army instigated a coup d'état against the already weak constitutional monarchy. The young king and his family, after a few miscues, escaped from the Palace in Mafra to exile in England. On the morning of 5 October 1910, the Republic was declared from the balcony of Lisbon City Hall, ending eight centuries of monarchy in Portugal.
Portugal in the Middle Ages
In 1171 Afonso concluded a seven years truce with the Moors; weakened by his wound and by old age, he could no longer take the field, and when the war broke out afresh he delegated the chief command to his son Sancho. Between 1179 and 1184 the Moors retrieved many of their losses in Alentejo, but were unable to retake Santarém and Lisbon. In 1179, by the papal bull "Manifestis Probatum", Pope Alexander III acknowledged Portugal as an independent nation and Afonso and his heirs as her rightful kings. Afonso died on December 6, 1185. He had secured for Portugal both the status and the name of an independent kingdom, and had extended its frontier southwards from the Mondego to the Tagus. He had laid the foundation of its navy and had strengthened, if he did not inaugurate, that system of co-operation between the Crown and the military orders which afterwards proved of incalculable service in the maritime and colonial development of the nation.