Two female suicide bombers hit the Moscow Metro system at the peak of the morning rush hour, killing 40.

Thirty-five countries and over 370 cities join Earth Hour for the first time.

The Republic of Ireland becomes the first country in the world to ban smoking in all work places, including bars and restaurants.

Bulgaria, Estonia, Latvia, Lithuania, Romania, Slovakia and Slovenia join NATO as full members.

The Dow Jones Industrial Average closes above the 10,000 mark (10,006.78) for the first time, during the height of the internet boom.

Catherine Callbeck becomes premier of Prince Edward Island and the first woman to be elected in a general election as premier of a Canadian province.

WrestleMania III sets a world indoor attendance record at the Pontiac Silverdome with 93,173 fans.

The Telegu Desam Party (India's regional political party) was established by N. T. Rama Rao.

NASA's Mariner 10 becomes the first spaceprobe to fly by Mercury. It was launched on November 3, 1973.

Vietnam War: The last United States combat soldiers leave South Vietnam.

A Los Angeles, California jury recommends the death penalty for Charles Manson and three female followers.

My Lai massacre: Lt. William Calley is convicted of premeditated murder and sentenced to life in prison.

The Twenty-third Amendment to the United States Constitution is ratified, allowing residents of Washington, D.C., to vote in presidential elections.

The New York, Ontario and Western Railway makes its final run.

Ethel and Julius Rosenberg are convicted of conspiracy to commit espionage.

World War II: Last day of V-1 flying bomb attacks on England.

The Bombing of Lübeck in World War II is the first major success for the RAF Bomber Command against Germany and a German city.

In Germany, Adolf Hitler receives 99% of the votes in a referendum to ratify Germany's illegal reoccupation of the Rhineland, receiving 44.5 million votes out of 45.5 million registered voters.

Heinrich Brüning is appointed German Reichskanzler.

The M1911 .45 ACP pistol became the official U.S. Army side arm.

Dr. John Pemberton brews the first batch of Coca-Cola in a backyard in Atlanta, Georgia.

The Knights of Columbus are established.

Anglo-Zulu War: Battle of Kambula: British forces defeat 20,000 Zulus.

The Royal Albert Hall is opened by Queen Victoria.

Queen Victoria gives Royal Assent to the British North America Act which establishes the Dominion of Canada on July 1.

American Civil War: Federal forces under Major General Philip Sheridan move to flank Confederate forces under Robert E. Lee as the Appomattox Campaign begins.

Sepoy Mangal Pandey of the 34th Regiment, Bengal Native Infantry revolts against the British rule in India and inspires a long-drawn War of Independence of 1857 also known as the Sepoy Mutiny.

The United Kingdom annexes the Punjab.

Mexican-American War: United States forces led by General Winfield Scott take Veracruz after a siege.

Great Bosnian uprising: Bosniak rebel against Turkey.

King Gustav IV Adolf of Sweden abdicates after a coup d'état. At the Diet of Porvoo, Finland's four Estates pledge allegiance to Alexander I of Russia, commencing the secession of the Grand Duchy of Finland from Sweden.

Construction is authorized of the Great National Pike, better known as the Cumberland Road, becoming the first United States federal highway.

New York passes a law aimed at gradually abolishing slavery in the state.

King Gustav III of Sweden dies after being shot in the back at a midnight masquerade ball at Stockholm's Royal Opera 13 days earlier. He is succeeded by Gustav IV Adolf.

Swedish colonists establish the first settlement in Delaware, naming it New Sweden.

Treaty of Saint-Germain is signed, returning Quebec to French control after the English had seized it in 1629.

The city of Salvador da Bahia, the first capital of Brazil, is founded.

Wars of the Roses: Battle of Towton