In History, Today on January 21

Google announced the firm terminated plans for an AI ethics advisory board following internal backlash and public critiques of the board's composition.

Credit Suisse reported a massive data breach, with leaked data revealing decades of details on its accounts tied to human rights abusers, corrupt politicians, and criminals.

The United States rejoined the Paris Agreement on climate change, reversing the previous administration's withdrawal from the international accord.

A total lunar eclipse, also known as a 'super blood wolf moon', was visible across North and South America, Europe, and Africa.

A Turkish military operation named 'Operation Olive Branch' was launched against the YPG militia in Afrin, Syria.

The Women's March took place in Washington, D.C., and around the world, with millions of people protesting for women's rights and other civil rights issues.

The U.S. Supreme Court delivered its decision in Citizens United v. Federal Election Commission, allowing corporations and unions to spend unlimited amounts on political campaigns.

The stock markets around the world experienced a significant decline, known as 'Black Monday', due to fears of a U.S. recession.

In Belize, Hurricane Iris left its mark with a trail of devastation, primarily affecting the southern part of the country. The storm caused significant damage to infrastructure and agriculture, catapulting the region into a long recovery process.

The Concorde supersonic passenger jet began commercial service with flights from London to Bahrain and Paris to Rio de Janeiro.

The USS Nautilus, the world's first operational nuclear-powered submarine, was launched in Groton, Connecticut.

During World War II, the Battle of Rabaul begins. The Japanese invade the Australian-held New Britain island and capture Rabaul, a strategically important harbor.

Vladimir Lenin, the leader of the Bolshevik Revolution and the first head of the Soviet state, died, leading to a power struggle in the Soviet Union.

The first Monte Carlo Rally took place, establishing a tradition in motorsport.

New York City passes the Sullivan Ordinance, the first city ordinance in the United States that attempts to restrict smoking by banning women from smoking in public places.

Opel begins automobile production. This marks the German company's transition from manufacturing sewing machines to producing automobiles.

The Amateur Athletic Union (AAU) is founded by William Buckingham Curtis in Washington, D.C.

Jefferson Davis of Mississippi resigns from the United States Senate following the state's secession from the Union.

The British exploratory expedition led by Captain James Clark Ross discovered the Royal Company Islands in Antarctica during his expedition to the Southern Ocean.

The first group of convicts arrived at Port Phillip, Australia, aboard the convict transport ship HMS Minerva as part of a short-lived settlement attempt in Victoria.

King Louis XVI of France was executed by guillotine in Paris, marking a pivotal moment in the French Revolution.

The Treaty of Stockholm was signed between Sweden and Prussia, concluding part of the Great Northern War.

The Swiss Anabaptist Movement is born when Conrad Grebel, Felix Manz, George Blaurock, and others baptize each other in the home of Manz's mother in Zürich, breaking a thousand-year tradition of church-state union.

The Pope Innocent V was elected, becoming the 185th pope of the Roman Catholic Church. His pontificate was quite short, lasting only five months.

The Battle of Bakhamra took place, where the Abbasid Caliphate defeated the Alid rebels led by Ibrahim ibn Abdallah.