Template:On this day - May 20

Miguel de la Quadra-Salcedo

• 1485 – Christian troops under the command of Ferdinand II of Aragon take the city of Ronda (present-day Spain), the most important point of Nasrid resistance on the western frontier.
• 1493 – In Spain, Christopher Columbus is appointed Captain General of the Spanish fleet with which he undertakes the second voyage to America.
• 1506 – Death of Christopher Columbus, principal admiral in command of the first European expeditions to the New World (b. 1451).
• 1520 – King Charles I of Spain leaves for Germany to be designated Emperor of the Holy Roman Empire, leaving the Burgundian cleric Adrian of Utrecht as regent of the Hispanic Monarchy.
• 1520 – In the Templo Mayor of Tenochtitlan (present-day Mexico), Spanish forces under the command of Pedro de Alvarado carry out the Toxcatl massacre.
• 1525 – Death of Alonso Fernández de Lugo, Spanish military officer (b. 1456).
• 1591 – Juan Ramírez de Velasco founds the City of Todos los Santos de La Nueva Rioja (present-day Argentina).
• 1741 – In the Viceroyalty of New Granada, the last British ships that were besieging Cartagena de Indias withdraw, defeated by Spanish and indigenous forces led by admiral Blas de Lezo.
• 1798 – Death of Cándido María Trigueros, Spanish writer, translator and playwright (b. 1736).
• 1841 – Death of José María Blanco White, Spanish writer, theologian and journalist (b. 1775).
• 1854 – The Battle of Zipaquirá takes place in the course of the Colombian civil war of 1854.
• 1888 – The regent Maria Christina inaugurates the Barcelona Universal Exposition (1888).
• 1902 – The Republic of Cuba, a puppet state of the United States, is officially declared.
• 1984 – In Argentina, former president María Estela Martínez de Perón returns to Buenos Aires from her exile in Madrid.
• 1985 – Death of Eduardo Ortiz de Landázuri, Spanish physician and professor (b. 1910).
• 1996 – In Montevideo (Uruguay) the first March of Silence for the detained-disappeared takes place.
• 2001 – The Wikipedia in Spanish begins its journey.
• 2007 – Death of Creu Casas i Sicart, Spanish pharmacist, teacher and bryologist (b. 1913).
• 2016 – Death of Miguel de la Quadra-Salcedo, Spanish reporter and adventurer, founder of the Ruta Quetzal (b. 1932).
• 2018 – In Venezuela, Nicolás Maduro is re-elected president.
• 2021 – The Wikipedia in Spanish turns 20.