In History, Today on April 6

Finland officially became the 31st member of NATO, joining the military alliance amid heightened security concerns due to Russia's actions in Ukraine.

Elon Musk was announced to join Twitter's board of directors after becoming the company's largest shareholder.

British Prime Minister Boris Johnson was moved to intensive care after his COVID-19 symptoms worsened, drawing global attention to the severity of the pandemic and affecting the UK's leadership.

The United States announced sanctions against Russian oligarchs, officials, and businesses, as part of efforts to penalize Russia for its interference in the 2016 U.S. presidential election and other activities.

The United States launched 59 Tomahawk cruise missiles at the Shayrat Airbase in Syria in response to a chemical weapons attack on civilians in Khan Shaykhun, marking the first direct American assault on the Syrian government during the civil war.

A shooting at the Fort Hood military base in Texas resulted in the deaths of four people, including the gunman, and injuries to 16 others. The incident raised concerns about security and mental health issues within the military.

The United Nations Security Council approved a resolution to send an advance team of observers to Syria to monitor a ceasefire between the government and opposition forces, part of efforts to end the Syrian Civil War.

Kyrgyzstan experienced a violent uprising that led to the ousting of President Kurmanbek Bakiyev. The unrest was fueled by public dissatisfaction with corruption and rising utility prices.

A devastating earthquake struck the Abruzzo region in central Italy, with its epicenter near L'Aquila, causing widespread destruction and resulting in the deaths of 308 people.

The United States declares the EP-3 crisis with China resolved after 11 days of diplomatic negotiations. The incident began on April 1, 2001, when a U.S. Navy EP-3E ARIES II reconnaissance aircraft collided with a Chinese fighter jet, leading to an emergency landing and the detention of the American crew by Chinese authorities.

The Rwandan Genocide began following the assassination of Rwandan President Juvénal Habyarimana when his plane was shot down.

A group of science fiction fans officially launched the Science Fiction and Fantasy Writers of America (SFWA).

The first commercial communications satellite, Intelsat I (nicknamed 'Early Bird'), was launched into geosynchronous orbit.

New York City Philharmonic conductor Leonard Bernstein presented a series of 53 televised music-appreciation concerts for children over CBS-TV beginning with the first episode titled 'What Does Music Mean?'

Nazi Germany launched Operation Marita, invading Greece and Yugoslavia during World War II.

Mahatma Gandhi completed his 240-mile Salt March to the sea in protest against the British salt monopoly in India.

The United States formally entered World War I by declaring war on Germany.

American explorer Robert Peary allegedly reached the North Pole, though his claim has been subject to controversy.

The first modern Olympic Games, the Games of the I Olympiad, opened in Athens, Greece. Organized by the International Olympic Committee, it marked the revival of the ancient Olympic tradition.

The Battle of Shiloh, one of the major early engagements of the American Civil War, began in southwestern Tennessee.

John Tyler is inaugurated as the 10th President of the United States, following the death of President William Henry Harrison.

The Black Hawk War begins as Chief Black Hawk enters Illinois with around 1,000 followers to reclaim lost land.

The Church of Jesus Christ of Latter-day Saints was formally organized by Joseph Smith in Fayette, New York.

Napoleon Bonaparte abdicated the throne of France for the first time and was exiled to the island of Elba.

British forces under General Isaac Brock begin preparing defenses in Upper Canada, anticipating war with the United States, which would be declared later in June.

John Jacob Astor incorporated the American Fur Company, which would become one of the largest businesses in the United States at the time.

Rama I is crowned King of Siam (Thailand), establishing the Chakri Dynasty, which continues to reign to this day.

The New York Slave Revolt of 1712 occurred, where enslaved Africans rose up against their masters, resulting in severe reprisals and stricter slave codes.

Dutch sailor Jan van Riebeeck established a resupply camp that eventually became Cape Town, marking the beginning of European colonization in South Africa.

One of the Ten Days Misunderstanding during the Eighty Years' War: the Spanish army, led by Alexander Farnese, captured Kortrijk.

The Ottoman Empire under Sultan Mehmed II began the siege of Constantinople, marking the start of the battle that ended the Byzantine Empire.

The Declaration of Arbroath, a declaration of Scottish independence, was signed by Scottish nobles.

King Richard I of England, also known as Richard the Lionheart, died from an infection following an injury sustained during a siege in France.

The construction of the New Minster in Winchester, England, began on April 6, 885, under the patronage of King Alfred the Great and his son, King Edward the Elder. It was later moved and transformed into Hyde Abbey in 1110.

The first Buddhist Council was convened during the month of Vesak following the death of Gautama Buddha. This council, held in Rajgir (present day Bihar, India), aimed to preserve his teachings (Dhamma) and monastic discipline (Vinaya).

Julius Caesar defeats the forces of the Optimates led by Metellus Scipio and Cato the Younger in the Battle of Thapsus, effectively ending the Roman Republic's civil war.