Template:On this day - July 3

Antonio de Ulloa

• 1535 – Diego de Almagro leaves Cusco (present-day Peru), accompanied by some 500 Spaniards and many natives, to conquer the territory to the south (present-day Chile).
• 1553 – On Isla Juana (present-day Cuba), the French privateer Jacques de Sores attacks the village of Havana.
• 1642 – The Battle of Barcelona, an episode of the Reapers' War, ends in a French victory.
• 1702 – In the course of the War of the Spanish Succession, Austria (supporting Charles VI) declares war on France and Spain (supporting Philip V).
• 1762 – Birth of Pedro Fermín de Vargas, New Granadan naturalist and economist (d. 1813).
• 1782 – Death of Esteban Terreros, Spanish philologist and lexicographer (b. 1707).
• 1795 – Death of Antonio de Ulloa, Spanish scientist, naturalist, sailor, soldier and writer (b. 1716).
• 1799 – Death of Pedro García de la Huerta, Spanish priest and art historian (b. 1748).
• 1810 – In Cali, Colombia, the treaty of the Friendly Cities of the Cauca Valley is signed, bringing together Cali itself, Cartago, Toro, Buga, Anserma and Caloto.
• 1825 – Birth of Laureano Fuentes Matons, Cuban violinist, conductor and composer (d. 1898).
• 1888 – Birth of Ramón Gómez de la Serna, Spanish writer and journalist, associated with the Generation of 1914 (d. 1963).
• 1898 – At the mouth of the Bay of Santiago de Cuba (in the course of the Spanish–American War) the Americans sink the six-ship squadron commanded by Admiral Pascual Cervera.
• 1906 – In the city of Oruro (Bolivia) the School of Mines is created, later known as the National Faculty of Engineering.
• 1927 – In the town of Cerro Chato (Uruguay), in a plebiscite, women vote for the first time in South America.
• 1933 – Death of Hipólito Yrigoyen, Argentine politician, president between 1916 and 1922 and between 1928 and 1930 (b. 1852).
• 1955 – In the presidential elections, women go to the polls to cast their vote for the first time in Mexico.
• 1976 – In Spain (after the end of the Franco dictatorship), Adolfo Suárez is appointed President of the Government.
• 1993 – In the Quiché Department (Guatemala), Jorge Carpio Nicolle (a presidential candidate) is shot dead, together with three members of the Union of the National Center (UCN), during a political tour of the west of the country.
• 2008 – In El Salvador the Colonia Málaga tragedy occurs, when a bus was swept away by the Arenal River, leaving 32 people dead.
• 2017 – Death of José Luis Cuevas, Mexican painter, writer, sculptor and illustrator (b. 1934).