Abbasid Revolution: The Hashimi rebels under Abu Muslim Khorasani take Merv, capital of the Umayyad province Khorasan, marking the consolidation of the Abbasid revolt.

Abbasid RevolutionKaysanites ShiaAbu Muslim KhorasaniMervUmayyad Caliphate

Charles the Bald and Louis the German swear the Oaths of Strasbourg in the French and German languages.

Charles the BaldLouis the GermanOaths of Strasbourg

Pope Benedict VIII crowns Henry of Bavaria, King of Germany and of Italy, as Holy Roman Emperor.

Pope Benedict VIIIHenry II, Holy Roman EmperorMonarchyHoly Roman Emperor

Pope Gregory VII excommunicates Henry IV, Holy Roman Emperor.

Pope Gregory VIIHenry IV, Holy Roman Emperor

Pope Innocent II is elected.

Pope Innocent II

Several hundred Jews are burned to death by mobs while the remaining Jews are forcibly removed from Strasbourg.

Strasbourg massacreStrasbourg

Richard II of England dies, most probably from starvation, in Pontefract Castle, on the orders of Henry Bolingbroke.

Richard II of EnglandPontefract CastleHenry Bolingbroke

Spanish Inquisition: The Catholic Monarchs issue a decree forcing Muslims in Granada to convert to Catholicism or leave Spain.

Spanish InquisitionCatholic MonarchsKingdom of Granada (Crown of Castile)

Spanish conquistadores, led by Nuño de Guzmán, overthrow and execute Tangaxuan II, the last independent monarch of the Tarascan state in present-day central Mexico.

Nuño de GuzmánTangaxuan IITarascan state

Thomas Cranmer is declared a heretic.

Thomas CranmerChristian heresy

Coronation of Akbar.

Akbar

Arauco War: The Mapuche under their elected military leader, Clentaru, rise up against the Spanish in an insurrection in present-day central Chile.

Arauco WarMapucheToqui

The United States flag is formally recognized by a foreign naval vessel for the first time, when French Admiral Toussaint-Guillaume Picquet de la Motte renders a nine gun salute to USS Ranger, commanded by John Paul Jones.

United States flagAdmiralToussaint-Guillaume Picquet de la MotteUSS Ranger (1777)John Paul Jones

American Revolutionary War: The Battle of Kettle Creek is fought in Georgia.

American Revolutionary WarBattle of Kettle CreekGeorgia (U.S. state)

James Cook is killed by Native Hawaiians near Kealakekua on the Island of Hawaii.

James CookNative HawaiiansKealakekuaHawaii (island)

French Revolutionary Wars: Battle of Cape St. Vincent: John Jervis, (later 1st Earl of St Vincent) and Horatio Nelson (later 1st Viscount Nelson) lead the British Royal Navy to victory over a Spanish fleet in action near Gibraltar.

French Revolutionary WarsBattle of Cape St Vincent (1797)John Jervis, 1st Earl of St VincentHoratio Nelson, 1st Viscount NelsonRoyal Navy

Karađorđe leads the First Serbian Uprising against the Ottoman Empire.

KarađorđeFirst Serbian UprisingOttoman Empire

Ras Marye of Yejju marches into Tigray and defeats and kills Dejazmach Sabagadis in the Battle of Debre Abbay.

Marye of YejjuTigray ProvinceSabagadisBattle of Debre Abbay

The original Quorum of the Twelve Apostles, in the Latter Day Saint movement, is formed in Kirtland, Ohio.

Quorum of the TwelveLatter Day Saint movementKirtland, Ohio

In New York City, James Knox Polk becomes the first serving President of the United States to have his photograph taken.

James Knox Polk

Great Ormond St Hospital for Sick Children, the first hospital in England to provide in-patient beds specifically for children, is founded in London.

Great Ormond Street Hospital

Texas is linked by telegraph to the rest of the United States, with the completion of a connection between New Orleans and Marshall, Texas.

TexasTelegraphyNew OrleansMarshall, Texas

Oregon is admitted as the 33rd U.S. state.

OregonU.S. state

Alexander Graham Bell applies for a patent for the telephone, as does Elisha Gray.

Alexander Graham BellPatentElisha Gray

The War of the Pacific breaks out when Chilean armed forces occupy the Bolivian port city of Antofagasta.

War of the PacificChileBoliviaAntofagasta

Voting machines are approved by the U.S. Congress for use in federal elections.

Voting machineUnited States CongressElection

British forces begin the Battle of the Tugela Heights in an effort to lift the Siege of Ladysmith.

Battle of the Tugela HeightsSiege of Ladysmith

The United States Department of Commerce and Labor is established (later split into the Department of Commerce and the Department of Labor).

United States Department of CommerceUnited States Department of Labor

Arizona is admitted as the 48th U.S. state.

ArizonaU.S. state

The US Navy commissions its first class of diesel-powered submarines.

United States E-class submarine