Balkan Campaign: The Avars lift the siege at the Byzantine stronghold of Tomis. Their leader Bayan I retreats north of the Danube River after the Avaro-Slavic hordes are decimated by the plague.

Maurice's Balkan campaignsPannonian AvarsSiegeByzantine EmpireConstanța

The people of Sicily rebel against the Angevin king Charles I, in what becomes known as the Sicilian Vespers.

SicilyCapetian House of AnjouMonarchCharles I of NaplesSicilian Vespers

Edward I sacks Berwick-upon-Tweed, during armed conflict between Scotland and England.

Edward I of EnglandCapture of Berwick (1296)Berwick-upon-TweedKingdom of ScotlandKingdom of England

Joachim Murat issues the Rimini Proclamation which would later inspire Italian unification.

Joachim MuratRimini ProclamationItalian unification

The Florida Territory is created in the United States.

Florida Territory

The National Bank of Greece is founded in Athens.

National Bank of GreeceAthens

Ether anesthesia is used for the first time, in an operation by the American surgeon Dr. Crawford Long.

Diethyl etherAnesthesiaPhysicianCrawford Long

One of the most important battles of the Dominican War of Independence from Haiti takes place near the city of Santiago de los Caballeros.

Battle of Santiago (1844)Dominican War of IndependenceHaitiSantiago de los Caballeros

Origins of the American Civil War: "Border Ruffians" from Missouri invade Kansas and force election of a pro-slavery legislature.

Origins of the American Civil WarBorder RuffianMissouriKansasSlavery

The Treaty of Paris is signed, ending the Crimean War.

Treaty of Paris (1856)Crimean War

Danish prince Wilhelm Georg is chosen as King George of Greece.

George I of Greece

Alaska is purchased from Russia for $7.2 million, about 2-cent/acre ($4.19/km²), by United States Secretary of State William H. Seward.

Alaska PurchaseRussian EmpireUnited States Secretary of StateWilliam H. Seward

Texas is readmitted to the Union following Reconstruction.

TexasUnion (American Civil War)Reconstruction Era

The Battle for Kushka triggers the Panjdeh Incident which nearly gives rise to war between the British Empire and Russian Empire.

Battle for KushkaPanjdeh IncidentBritish EmpireRussian Empire

German Society of Chemistry issues an invitation to other national scientific organizations to appoint delegates to the International Committee on Atomic Weights.

Commission on Isotopic Abundances and Atomic Weights

Sultan Abd al-Hafid signs the Treaty of Fez, making Morocco a French protectorate.

Sultan of MoroccoAbd al-Hafid of MoroccoTreaty of FezMoroccoProtectorate

Outburst of bloody March Events in Baku and other locations of Baku Governorate.

March DaysBakuBaku Governorate

The Heinkel He 100 fighter sets a world airspeed record of 463 mph (745 km/h).

Heinkel He 100

Second Sino-Japanese War: Japan declares Nanking capital of a new Chinese puppet government, nominally controlled by Wang Jingwei.

Second Sino-Japanese WarNanjingReorganized National Government of the Republic of ChinaWang Jingwei

World War II: Allied bombers conduct their most severe bombing run on Sofia, Bulgaria.

Allies of World War IIBombing of Sofia in World War IISofiaKingdom of Bulgaria

Out of 795 Lancasters, Halifaxes and Mosquitos sent to attack Nuremberg, 95 bombers do not return, making it the largest RAF Bomber Command loss of the war.

Avro LancasterHandley Page HalifaxDe Havilland MosquitoNurembergRAF Bomber Command

World War II: Soviet forces invade Austria and capture Vienna; Polish and Soviet forces liberate Danzig.

Soviet UnionRed ArmyViennaArmia LudowaRed Army

A riot breaks out in Austurvöllur square in Reykjavík, when Iceland joins NATO.

1949 anti-NATO riot in IcelandReykjavíkIcelandNATO

The Single Convention on Narcotic Drugs is signed in New York City.

Single Convention on Narcotic Drugs

Vietnam War: A car bomb explodes in front of the United States Embassy, Saigon, killing 22 and wounding 183 others.

Vietnam WarCar bombUnited States Embassy, Saigon

Vietnam War: The Easter Offensive begins after North Vietnamese forces cross into the Demilitarized Zone (DMZ) of South Vietnam.

Easter OffensiveNorth VietnamVietnamese Demilitarized ZoneSouth Vietnam

Airey Neave, a British Member of Parliament, is killed by a car bomb as he exits the Palace of Westminster. The Irish National Liberation Army claims responsibility.

Airey NeaveMember of parliamentPalace of WestminsterIrish National Liberation Army

U.S. President Ronald Reagan is shot in the chest outside a Washington, D.C., hotel by John Hinckley, Jr.; three others are wounded in the same incident.

Ronald ReaganAttempted assassination of Ronald ReaganJohn Hinckley, Jr.

Space Shuttle program: STS-3 Mission is completed with the landing of Columbia at White Sands Missile Range, New Mexico.

Space Shuttle programSTS-3Space Shuttle ColumbiaWhite Sands Missile RangeNew Mexico

Twelve gunmen attack the Manawan Police Academy in Lahore, Pakistan.

2009 Lahore police academy attacks