Estado Novo (Portugal)
King Carlos I of Portugal confirmed colonial treaties of the 19th century that stabilized the situation in Portuguese Africa. These agreements were, however, unpopular in Portugal, where they were seen as being to the disadvantage of the country. In addition, Portugal was declared bankrupt twice—first on 14 June 1892 and again on 10 May 1902—causing industrial disturbances, socialist and republican antagonism, and press criticism of the monarchy. Carlos responded by appointing João Franco as Prime Minister and subsequently accepting Parliament's dissolution. In 1908, Carlos I was assassinated in Lisbon. The Portuguese monarchy lasted until 1910 when, through the 5 October revolution, it was overthrown and Portugal was proclaimed a republic. The overthrow of the Portuguese monarchy in 1910 led to a 16-year struggle to sustain parliamentary democracy under republicanism – the Portuguese First Republic (1910–1926).
Henry, King of Portugal
Cardinal Henry ( ; 31 January 1512 – 31 January 1580) was King of Portugal and the Algarves and a cardinal of the Roman Catholic Church. He ruled Portugal between 1578 and 1580 and was known as "Henry the Chaste" (Portuguese: "Henrique o Casto") and the "Cardinal-King". As a clergyman, he was bound to chastity, and as such, had no children to succeed him, and thus an end to the Royal House of Aviz. His death led to the Portuguese succession crisis of 1580 and ultimately to the 60-year Iberian Union that saw Portugal share a monarch with that of Spain. The next independent monarch of Portugal would be John IV, who took the throne after 60 years of Spanish rule.