Template:On this day - July 21

Enrique Flórez.

• 1348 – After the Battle of Épila, Peter IV of Aragon subdues and dissolves the powerful Aragonese Union, which brought together the nobility of the Kingdom of Aragon.
• 1454 – Henry IV is proclaimed King of Castile after the death of his father, John II, in Valladolid (Spain).
• 1535 – During the Tunis campaign, the Spanish expedition organized by King Charles I halts the expansion of Barbarossa toward the European continent.
• 1535 – Birth of García Hurtado de Mendoza, Spanish soldier and conquistador who became Governor of Chile and Viceroy of Peru (d. 1609).
• 1552 – Death of Antonio de Mendoza, first Viceroy of New Spain from 1535 to 1550 (b. 1494).
• 1568 – The Spanish army, commanded by Fernando Álvarez de Toledo y Pimentel, defeats the rebel army of the Netherlands commanded by Louis of Nassau at the Battle of Jemmingen.
• 1702 – Birth of Enrique Flórez, historian, translator, geographer, chronologist, epigraphist, numismatist, paleographer, bibliographer and archaeologist of the Spanish Enlightenment (d. 1773).
• 1773 – Pope Clement XIV orders the dissolution of the Society of Jesus.
• 1775 – Construction begins on the new capital of Guatemala (the previous one, called La Antigua, was destroyed by a series of earthquakes in 1773). It was sited 40 km from the former one and named Guatemala City.
• 1810 – Death of José Salvany y Lleopart, Spanish surgeon and soldier, who took part in the Royal Philanthropic Vaccine Expedition (b. c. 1774).
• 1822 – Agustín de Iturbide is officially crowned as the first Emperor of Mexico.
• 1825 – Birth of Práxedes Mateo Sagasta, Spanish civil engineer and statesman (d. 1903).
• 1847 – The treaty of peace and friendship is signed by which Spain renounced sovereignty over the territories that make up the Republic of Bolivia.
• 1938 – In Argentina the peace treaty between Bolivia and Paraguay is signed, ending the Chaco War. For this agreement, the Argentine foreign minister Carlos Saavedra Lamas will win the Nobel Peace Prize.
• 1946 – In the city of La Paz (Bolivia) a mob takes the Government Palace, murders President Gualberto Villarroel and hangs him from a lamppost in the Plaza Murillo together with three of his collaborators.
• 1953 – The trade agreement between Spain and Chile is signed, under which Spain supplies machinery and industrial equipment in exchange for saltpeter, copper and raw materials.
• 1956 – In commemoration of the Congress of Panama (convened by Bolívar in 1826), the presidents of 19 American countries meet and sign a declaration of solidarity in favor of peace and freedom.
• 1969 – In Madrid (Spain), Francisco Franco presents to the Council of the Realm the designation of Juan Carlos I as successor to the throne.
• 2007 – Death of Jesús de Polanco, Spanish businessman, founder of Grupo Prisa (b. 1929).