August 4 is the 216th (two hundred and sixteenth) day of the year in the Gregorian calendar and the 217th in leap years. There are 149 days left to end the year.
886: on the death of Muhammad I, his son Al-Mundir is named the sixth Umayyad emir in Córdoba.
1135: On the Italian peninsula, Pisan troops attack the city of Amalfi.
1435: in Ponza, the fleet of Alfonso V of Aragon is defeated by the Genoese.
1484: King Ferdinand the Catholic reproaches the Council of One Hundred of Barcelona for its opposition to the trials of the Inquisition.
1496: on the island of Hispaniola, the Spaniard Bartholomew Columbus, brother of Christopher Columbus, founded the city of Santo Domingo, the first permanent European city in the Americas and which today is the capital of the Dominican Republic.
1526: four days after the death of his companion on the expedition to the Moluccas Islands, Jofre García de Loaysa, Juan Sebastián Elcano, the Spanish navigator who had completed the first circumnavigation of the world in 1522, dies on the ship Victoria.
1540: the city of Yungay is founded in Peru.
1578: Battle of Alcazarquivir, between Portuguese and Moroccan troops, in which King Sebastian I of Portugal perished.
1693: in the Champagne region of France, the friar Dom Perignon invented champagne.
1704: in Gibraltar, after two days of Anglo-Dutch siege, the Spanish garrison of Gibraltar capitulates and Rear Admiral George Rooke takes possession of the place in the name of England.
1782: in Vienna (Austria) the composer Wolfgang Amadeus Mozart marries his cousin Constanze Weber
1789: in France, the National Assembly of the French Revolution abolishes the privileges of the aristocracy and the feudal system.
1800: the city of Sonsón is founded in Colombia.
1818: the Young Midshipmen Academy is created in Chile, currently known as the Arturo Prat Naval School.
1846: The State of Iowa is admitted to the American Union.
1851: in Nicaragua, a military coup led by conservative general Trinidad Muñoz overthrows President Laureano Pineda (1802-1853).
1859: in Costa Rica, a group of soldiers kidnaps President Juan Rafael Mora Porras and takes him by sea to Guatemala.
1880: In the Vatican, Pope Leo XIII declares Saint Thomas Aquinas "patron" of all Catholic educational centers in the world.
1881: in Seville (Spain) the highest temperature record in Europe is recorded: 50.0 °C.
1886: in Colombia, Rafael Núñez betrays the oath to defend the Constitution of Río Negro (1863) and promulgates the Constitution of the Republic of Colombia, which ends federalism and opens the way to 44 years of conservative hegemony that end with the arrival to the presidency of Enrique Olaya Herrera from Boyacá.
1897: at the archaeological site of La Alcudia, in Elche (Spain) the Lady of Elche is discovered.
1901: The deterioration of relations between Venezuela and Colombia creates an imminent danger of war.
1903: in the Vatican, after five days of deliberations, the conclave of cardinals elects Cardinal Giuseppe Sarto as Pope, who adopts the name of Pius X.
1905: Argentina: a group of young people founded the Club Atlético Estudiantes, later known as Estudiantes de La Plata.
1906: near Cabo de Palos (Spain) the Sirio is shipwrecked. More than two hundred people drown.
1907: in Morocco, the city of Casablanca is bombarded by the French ship Galilée.
1907: in La Coruña, Spain, the first issue of the magazine A Nosa Terra is published.
1909: in Spain it is agreed to abolish the redemption of military service for money.
1909: in Sweden, a general strike of 300,000 workers paralyzes the country.
1909: Thousands of Albanians demonstrate against the situation that is taking shape in Crete.
1914: at the Teatro Colón (Buenos Aires) the opera El sueño del alma, by the Argentine composer Carlos López Buchardo, is premiered.
1914: in Belgium ―in the framework of the Prime