Template:On this day - October 20

Abén Humeya

• 1500 – In Spain, the Catholic Monarchs issue a Royal Cédula constituting the municipality of Granada.
• 1520 – In the present-day Dominican Republic, Francisco Dávila founds the town of Hato Mayor del Rey as a stretch of land devoted to cattle raising and agriculture.
• 1548 – The Spanish explorer Alonso de Mendoza founds the town of Nuestra Señora de La Paz, today the capital of Bolivia.
• 1569 – Death of Abén Humeya, leader of the rebellion of the Moriscos of the Kingdom of Granada (b. c. 1545).
• 1572 – At Goes (Spanish Netherlands), Cristóbal de Mondragón, with 3,000 soldiers, lifts the rebel siege after wading by night 15 kilometers across the Scheldt River with the water up to their chests.
• 1687 – In the Viceroyalty of Peru, two earthquakes and the tsunami that followed destroy part of Lima and Callao.
• 1703 – Death of Tomás Marín de Poveda, Governor of the Kingdom of Chile between 1692 and 1700 (b. 1650).
• 1806 – Birth of Juan Manuel Montalbán, Spanish jurist (d. 1889).
• 1821 – Death of Félix de Azara, Spanish military officer, engineer, explorer, cartographer, anthropologist and naturalist (b. 1742).
• 1841 – Death of Manuel Montes de Oca, Spanish naval officer and politician (b. 1804).
• 1883 – In Lima (Peru), the Treaty of Ancón is signed, restoring peace between Chile and Peru, under which Peru cedes to Chile the department of Tarapacá (today the Tarapacá Region).
• 1904 – In Santiago de Chile, the 1904 Treaty between Chile and Bolivia is signed, fixing a definitive boundary between the two countries and providing for the construction of the Arica–La Paz railway by Chile, as well as a series of benefits for Bolivia in Chilean ports.
• 1944 – In Guatemala, a civic-military movement known as the Guatemalan Revolution of 1944 takes place, joined by students, workers and teachers of the University of San Carlos, and overthrows the de facto government of Federico Ponce Vaides.
• 1975 – The Moroccan Green March on Western Sahara begins, to force the abandonment of the Spanish positions.
• 2007 – Death of Juan Antonio Cebrián, Spanish journalist, writer and radio broadcaster (b. 1965).
• 2014 – Death of Óscar de la Renta, Dominican fashion designer.