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By 1910, the Kingdom of Portugal was in deep crisis: national anger over the 1890 British Ultimatum,[1] the royal family's expenses,[2] the assassination of the King and his heir in 1908, changing religious and social views, instability of the two political parties (Progressive and Regenerador), the dictatorship of João Franco,[3] and the regime's apparent inability to adapt to modern times all led to widespread resentment against the Monarchy.[4] The proponents of the republic, particularly the Republican Party, found ways to take advantage of the situation.[5] The Republican Party presented itself as the only one with a programme capable of regaining Portugal's lost status and placing it on the path of progress.[6]


After the reluctance of the military to oppose the nearly two thousand soldiers and sailors that rebelled on the 3rd and 4th October 1910, the Republic was proclaimed at 9 a.m the next day from the balcony of Lisbon's City Hall.[7] A provisional government led by Teófilo Braga directed the fate of the country until the approval of the Constitution in 1911, which marked the beginning of the First Republic.[8] The national anthem and flag were changed, and some civil and religious liberties established.

History of Portugal (1834–1910)

Timeline of Portuguese history

British Pathé documentary film footage, Lisbon crowds and palace damage in

The Revolution In Portugal (1910)

OnWar.com, Armed Conflict Events Data

Naval Mutiny in Portugal 1910