Portugal was an absolute monarchy before 1822. It alternated between absolute and semi-constitutional monarchy from 1822 until 1834, when it would remain a semi-constitutional monarchy until its fall.
History
Origins
The Kingdom of Portugal finds its origins in the County of Portugal (1096–1139). The Portuguese County was a semi-autonomous county of the Kingdom of León. Independence from León took place in three stages:
Once Portugal was independent, D. Afonso I's descendants, members of the Portuguese House of Burgundy, would rule Portugal until 1383. Even after the change in royal houses, all the monarchs of Portugal were descended from Afonso I, one way or another, through both legitimate and illegitimate links.
With the start of the 20th century, Republicanism grew in numbers and support in Lisbon among progressive politicians and the influential press. However a minority with regard to the rest of the country, this height of republicanism would benefit politically from the Lisbon Regicide on 1 February 1908. While returning from the Ducal Palace at Vila Viçosa, King Charles and the Prince RoyalLuís Filipe were assassinated in the Terreiro do Paço, in Lisbon. With the death of the King and his heir, Charles I's second son would become monarch as King Manuel II. Manuel's reign, however, would be short-lived, ending by force with the 5 October 1910 revolution, sending Manuel into exile in the United Kingdom and giving way to the Portuguese First Republic.
On 19 January 1919, the Monarchy of the North was proclaimed in Oporto. The monarchy would be deposed a month later and no other monarchist counterrevolution in Portugal has happened since.
After the republican revolution in October 1910, the remaining colonies of the empire became overseas provinces of the Portuguese Republic until the late 20th century, when the last overseas territories of Portugal were handed over. Most notably in Portuguese Africa which included the overseas provinces of Angola and Mozambique of which the handover took place in 1975, and finally in Asia the handover of Macau in 1999.
^J. Havighurs, Robert (1969). Society and Education in Brazil. University of Pittsburgh Press. p. 142. ISBN978-0822974079. Catholicism was the state religion of the Kingdom of Portugal
^ abReilly, Bernard F. (1993). The Medieval Spains. Cambridge University Press. p. 139. ISBN978-0521397414. Retrieved 11 October 2019. The new kingdom of Castile had roughly tripled in size to some 335,000 square kilometers by 1300 [...] Portugal swollen to 90,000 square kilometers and perhaps 800,000 inhabitants [...]
Serrão, Joaquim Veríssimo (1977). História de Portugal: Do Mindelo à Regeneração (1832-1851) (in Portuguese). Lisbon: Editorial Verbo.
Hespanha, António Manuel; Cardim, Pedro; Mattoso, José, eds. (1998). O Antigo Regime (1620-1807). História de Portugal (in Portuguese). Vol. 4. Lisboa: Ed. Estampa. ISBN978-972-33-1311-6.
1 1975 is the year of East Timor's Declaration of Independence and subsequent invasion by Indonesia. In 2002, East Timor's independence was fully recognized.