On this day: 14 August

A group of officials, led by the Western Han minister Huo Guang, present articles of impeachment against the new emperor, Liu He, to the imperial regent, Empress Dowager Shangguan.

Octavian holds the second of three consecutive triumphs in Rome to celebrate the victory over the Dalmatian tribes.

Abbasid Caliph al-Rashid Billah flees from Bagdhad, which had been besieged by an army of the Seljuk Turks under Sultan Ghiyath ad-Din Mas'ud for fifty days.

Taira no Munemori and the Taira clan take the young Emperor Antoku and the three sacred treasures and flee to western Japan to escape pursuit by the Minamoto clan.

War of the Breton Succession: Anglo-Bretons defeat the French in the Battle of Mauron.

Charles IV, Holy Roman Emperor, grants city privileges to Karlovy Vary.

Portuguese Crisis of 1383–85: Battle of Aljubarrota: Portuguese forces commanded by John I of Portugal defeat the Castilian army of John I of Castile.

The Spanish Villasur expedition, intended to slow the progress of French influence on the Great Plains of North America, ended in failure when it was ambushed by Pawnee and Otoe forces.

The Treaty of Wereloe ends the 1788–1790 Russo-Swedish War.

Slaves from plantations in Saint-Domingue hold a Vodou ceremony led by houngan Dutty Boukman at Bois Caïman, marking the start of the Haitian Revolution.

A cease fire agreement, called the Convention of Moss, ends the Swedish–Norwegian War.

American Indian Wars: Second Seminole War ends, with the Seminoles forced from Florida.

Pica Law (Legge Pica), a form of martial law, is established as the Italian government passes this anti-brigandage law to suppress resistance to the Unification of Italy.

Oregon Territory is organized by act of Congress.

Construction of Cologne Cathedral, the most famous landmark in Cologne, Germany, is completed.

Japan's first patent is issued to the inventor of a rust-proof paint.

France becomes the first country to introduce motor vehicle registration.

The first claimed powered flight, by Gustave Whitehead in his Number 21.

World War I: Start of the Battle of Lorraine, an unsuccessful French offensive.

World War I: The Republic of China, which had heretofore been shipping labourers to Europe to assist in the war effort, officially declares war on the Central Powers, although it will continue to send to Europe labourers instead of combatants for the remaining duration of the war.

The 1920 Summer Olympics, having started four months earlier, officially open in Antwerp, Belgium, with the newly adopted Olympic flag and the Olympic oath being raised and taken at the Opening Ceremony for the first time in Olympic history.

Tannu Uriankhai, later Tuvan People's Republic is established as a completely independent country (which is supported by Soviet Russia).

Loggers cause a forest fire in the Coast Range of Oregon, later known as the first forest fire of the Tillamook Burn; destroying 240,000 acres (970 km2) of land.

Franklin D. Roosevelt signs the Social Security Act, creating a government pension system for the retired.

Kenji Hatanaka (pictured) and other Japanese military officers launched an attempted coup d'état to prevent the surrender of Japan.

An Idaho Department of Fish and Game program to relocate beavers known as Beaver drop occurred. This program relocated beavers from Northwestern Idaho to Central Idaho by airplane and then parachuting the beavers into the Chamberlain Basin.

Founding and first official meeting of the American Football League.

Bahrain declares independence from Britain.

Turkey launches the second phase of the invasion of Cyprus, which eventually resulted in the Turkish occupation of 37% of Cyprus.

The Rocky Horror Picture Show premiered in London, the first in its record-breaking run in cinemas, which continues in limited release.

Lech Wałęsa leads strikes at the Gdańsk, Poland shipyards.

Ilich Ramírez Sánchez, also known as "Carlos the Jackal", is captured.

A widescale power blackout affects the northeast United States and Canada.

The inaugural edition of the Youth Olympic Games opened in Singapore for athletes aged between 14 and 18.

The U.S. Embassy in Havana, Cuba re-opens after 54 years of being closed when Cuba–United States relations were broken off.

Former U.S. president Donald Trump is charged in Georgia along with 18 others in attempting to overturn the results of the 2020 election in that state, his fourth indictment of 2023.