In History, Today on May 1

The Treaty of Edinburgh-Northampton is signed, ending the First War of Scottish Independence and recognizing Scotland's independence from England.

The Act of Union came into effect, uniting the Kingdom of England and the Kingdom of Scotland into a single sovereign state known as the Kingdom of Great Britain.

The first cricket match was played in America, in New York.

Publication of Species Plantarum by Carl Linnaeus, marking the formal start of plant taxonomy.

The Haymarket affair began in Chicago as part of a nationwide movement for an eight-hour workday, leading to a violent confrontation.

The World's Columbian Exposition opened in Chicago, celebrating the 400th anniversary of Christopher Columbus's arrival in the New World.

The Empire State Building was officially opened in New York City, becoming the tallest building in the world at the time.

Adolf Hitler's death was announced on German radio, with Grand Admiral Karl Dönitz succeeding him as President of Germany.

The U-2 incident occurred when an American U-2 spy plane was shot down over the Soviet Union, escalating Cold War tensions.

Japan's Naomi Uemura became the first person to reach the North Pole alone.

Ayrton Senna, a Brazilian Formula One driver, died in a crash during the San Marino Grand Prix, leading to significant safety changes in the sport.

U.S. President George W. Bush declared the end of major combat operations in Iraq aboard the USS Abraham Lincoln, marking a significant moment in the Iraq War.

The European Union expanded to include 10 new member states, marking the largest single expansion of the EU in terms of people and number of countries.

The Great American Boycott, also known as 'A Day Without Immigrants,' took place in the United States, where millions of immigrants and their supporters protested against proposed anti-immigration legislation.

U.S. President Barack Obama announced that Osama bin Laden, the leader of al-Qaeda, was killed by U.S. Navy SEALs in Abbottabad, Pakistan, ending a nearly decade-long manhunt following the September 11 attacks.

Emperor Naruhito ascended to the Chrysanthemum Throne, marking the beginning of the Reiwa era in Japan following the abdication of his father, Emperor Akihito.