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Template:On this day - April 3
From Hispanopedia

- 1055 – Death of Idris II ibn Ali, Berber of the Hammudid dynasty, sixth king of the Taifa of Málaga (present-day Spain) (b. 1030).
- 1441 – Death of Blanche I of Navarre, Navarrese aristocrat, wife of the King of Sicily (b. 1385).
- 1493 – The Catholic Monarchs receive Christopher Columbus with full honors in Barcelona (Spain).
- 1559 – The Peace Treaty of Cateau-Cambrésis is signed between the monarchs Philip II of Spain, Henry II of France and Elizabeth I of England.
- 1588 – In the Viceroyalty of Peru (present-day Argentina), Juan Torres de Vera y Aragón founds the village of San Juan de Vera de las Siete Corrientes, now called the city of Corrientes.
- 1682 – Death of Bartolomé Esteban Murillo, Spanish Baroque painter (b. 1617).
- 1818 – In the town of San Carlos (in the Argentine province of Corrientes), Portuguese troops led by the Carioca Francisco das Chagas Santos defeat the Argentine ones led by the Guaraní Andresito Guasurarí y Artigas, on the last of the four days of the Battle of San Carlos, part of the Luso-Brazilian invasion.
- 1874 – Birth of Eduardo Sánchez de Fuentes, Cuban composer and writer (d. 1944).
- 1909 – Death of Pascual Cervera y Topete, admiral of the Spanish Navy (b. 1839).
- 1930 – Radiotelephone communications begin between the United States and Chile.
- 1942 – During the Second World War, Japanese troops begin the assault on U.S. and Filipino troops on the Bataan peninsula.
- 1950 – In the city of Cuenca (Ecuador), the Tomebamba River overflows its banks because of the continuous rains of that year, carrying away everything in its path.
- 1959 – In Santa Fe de Veraguas (Panama), the Cerro Tute Armed Uprising takes place.
- 1979 – In Spain, the first democratic municipal elections after the Franco dictatorship are held.
- 2004 – In Madrid (Spain), several Islamist terrorists involved in the 11-M attacks blow themselves up during the assault by the GEOS on their apartment.
- 2020 – Death from COVID-19 of Rodrigo Pesántez Rodas, Ecuadorian writer (b. 1937).
- 2022 – In Costa Rica, Rodrigo Chaves wins the presidential runoff with more than 52% of the vote.