José Luciano de Castro Pereira Corte-Real (1834–1914) was a Portuguese

Portugal

Portugal , officially the Portuguese Republic is a country situated in southwestern Europe on the Iberian Peninsula. Portugal is the westernmost country of Europe, and is bordered by the Atlantic Ocean to the West and South and by Spain to the North and East. The Atlantic archipelagos of the...

 politician who served three terms as President of the Council of Ministers (Prime Minister). He was one of the founders of the Progressist Party

Progressive Party (Portugal)

The Progressive Party , along with the their opponent the Partido Regenerador, was a political party in Portugal during the constitutional monarchy at the end of the 19th century.-Ideology:...

, of which he was the leader from the time of Anselmo José Braamcamp's death in 1885, onward.

de Castro was the head of government during the pink-map crisis

Pink Map

The Pink Map was a document representing Portugal's claim of sovereignty over the land between Angola and Mozambique, which today is currently Zambia, Zimbabwe and Malawi.The Pink Map collided with Sir Cecil Rhodes' "Cape to Cairo Red Line"...

 and the subsequent British ultimatum

British Ultimatum

The 1890 British Ultimatum was an ultimatum by the British government delivered on 11 January 1890 to Portugal in breach of the Treaty of Windsor of 1386...

. The crisis was one of the factors that proved decisive in the fall of the Portuguese constitutional monarchy on 5 October 1910.