May 17 in History

The New York Stock Exchange is an American stock exchange headquartered at the New York Stock Exchange Building in the Financial District of Lower Manhattan in New York City. It is the largest stock exchange in the world by market capitalization, exceeding $44 trillion in January 2026. The NYSE is owned by Intercontinental Exchange, an American holding company that it also lists. Previously, it was part of NYSE Euronext (NYX), which was formed by the NYSE's 2007 merger with Euronext. According to a Gallup poll conducted in 2022, approximately 58% of American adults reported having money invested in the stock market, either through individual stocks, mutual funds, or retirement accounts.

Napoleon Bonaparte, later known by his regnal name Napoleon I, was Emperor of the French from 18 May 1804 until his first abdication in 1814, with a brief restoration during the Hundred Days in 1815. He rose to prominence as a general during the French Revolution and led a series of military campaigns across Europe and the Middle East during the French Revolutionary and Napoleonic Wars. As a statesman, he implemented numerous legal and administrative reforms in France and Europe.

The Constitution of Norway was adopted on 16 May and signed on 17 May 1814 by the Norwegian Constituent Assembly at Eidsvoll. The latter date is the National Day of Norway; it marks the establishment of the constitution.

María Rosalía Rita de Castro, was a Galician poet and novelist, considered one of the most important figures of the 19th-century Spanish literature and modern lyricism. Widely regarded as the greatest Galician cultural icon, she was a leading figure in the emergence of the literary Galician language. Through her work, she projected multiple emotions, including the yearning for the celebration of Galician identity and culture, and female empowerment. She is credited with challenging the traditional female writer archetype.

The International Telecommunication Union (ITU) is a specialized agency of the United Nations responsible for many matters related to information and communication technologies. It was established on 17 May 1865 as the International Telegraph Union, the first formal and permanent international organization. The organization significantly predates the UN, making it the oldest UN agency. Doreen Bogdan-Martin is the current secretary-general of the ITU, the first woman to serve as its head.

The Wonderful Wizard of Oz is a 1900 children's fantasy novel written by author L. Frank Baum and illustrated by W. W. Denslow. It is the first novel in the Oz series of books. A Kansas farm girl named Dorothy ends up in the magical Land of Oz after she and her pet dog Toto are swept away from their home by a cyclone. Upon her arrival in the magical world of Oz, she learns she cannot return home until she has destroyed the Wicked Witch of the West.

The Protocol of Corfu, signed on 17 May 1914, was an agreement between the representatives of the Albanian Government and the Provisional Government of Northern Epirus, which officially recognized the area of Northern Epirus as an autonomous self-governing region under the sovereignty of the prince of the newly established Principality of Albania. The agreement granted the Greeks of the districts of Korytsa (Korçë) and Argyrokastro (Gjirokastër), which form Northern Epirus, wider religious, educational, cultural and political autonomy, inside the borders of the Albanian state.

Vidkun Abraham Lauritz Jonssøn Quisling was a Norwegian military officer, politician and Nazi collaborator who headed the government of Norway during the country's occupation by Nazi Germany during World War II.

The Columbia University Lions are the collective athletic teams and their members from Columbia University, an Ivy League institution in New York City, United States. The current director of athletics is Peter Pilling.

Operation Chastise, commonly known as the Dambusters Raid, was an attack on German dams carried out on the night of 16/17 May 1943 by 617 Squadron RAF Bomber Command, later called the Dam Busters, using special bouncing bombs developed by Barnes Wallis. The Möhne and Edersee dams were breached, causing catastrophic flooding of the Ruhr valley and of villages in the Eder valley; the Sorpe Dam sustained only minor damage. Two hydroelectric power stations were destroyed and several more damaged. Factories and mines were also damaged and destroyed. An estimated 1,600 civilians – about 600 Germans and 1,000 enslaved labourers, mainly Soviet – were killed by the flooding. Despite rapid repairs by the Germans, production did not return to normal until September. The RAF lost 56 aircrew, with 53 dead and three captured, amid losses of eight aircraft.

The Supreme Court of the United States (SCOTUS) is the highest court in the federal judiciary of the United States. It has ultimate appellate jurisdiction over all U.S. federal court cases, and over state court cases that turn on questions of U.S. constitutional or federal law. It also has original jurisdiction over a narrow range of cases, specifically "all Cases affecting Ambassadors, other public Ministers and Consuls, and those in which a State shall be Party". In 1803, the court asserted itself the power of judicial review, the ability to invalidate a statute for violating a provision of the Constitution. It is also able to strike down presidential directives for violating either the Constitution or statutory law.

The Venera program was a series of space probes developed by the Soviet Union between 1961 and 1984 to gather information about the planet Venus. A total of eighteen probes were sent, including two related Vega probes.

The Troubles were an ethno-nationalist conflict in Northern Ireland that lasted for about 30 years from the late 1960s to 1998. Also known internationally as the Northern Ireland conflict, it began in the late 1960s and is usually deemed to have ended with the Good Friday Agreement of 1998. Although the Troubles mostly took place in Northern Ireland, at times violence spilled over into parts of the Republic of Ireland, England, and mainland Europe.

Nolan Kay Bushnell is an American businessman and electrical engineer. He established Atari, Inc., and the Chuck E. Cheese chain. He has been inducted into the Video Game Hall of Fame and the Consumer Electronics Association Hall of Fame, received the BAFTA Fellowship and the Nations Restaurant News "Innovator of the Year" award and was named one of Newsweek's "50 Men Who Changed America". He has started more than 20 companies and is one of the founding fathers of the video game industry. He is on the board of Anti-Aging Games. In 2012, he founded an educational software company called Brainrush that uses video game technology in educational software.

Maoism, officially Mao Zedong Thought, is a variety of Marxism–Leninism that Mao Zedong developed while trying to realise a socialist revolution in the agricultural, pre-industrial society of the Republic of China and later the People's Republic of China. A difference between Maoism and traditional Marxism–Leninism is that a united front of progressive forces in class society would lead the revolutionary vanguard in pre-industrial societies rather than communist revolutionaries alone. This theory, in which revolutionary praxis is primary and ideological orthodoxy is secondary, represents urban Marxism–Leninism adapted to pre-industrial China. Later theoreticians expanded on the idea that Mao had adapted Marxism–Leninism to Chinese conditions, arguing that he had in fact updated it fundamentally and that Maoism could be applied universally throughout the world. This ideology is often referred to as Marxism–Leninism–Maoism to distinguish it from the original ideas of Mao.

Lebanon, officially the Lebanese Republic, is a country in the Levant region of West Asia. Situated at the crossroads of the Mediterranean Basin and the Arabian Peninsula, it is bordered by Syria to the north and east, Israel to the south, and the Mediterranean Sea to the west; Cyprus lies a short distance from the coastline. Lebanon has a population of more than five million and an area of 10,452 square kilometres (4,036 sq mi). Beirut is the country's capital and largest city.

The Iran–Iraq War began with the Iraqi invasion of Iran in September 1980. After eight years of conflict, both countries accepted a ceasefire deal brokered by the United Nations, which became effective in August 1988. The war caused around 500,000 deaths, making it the deadliest conventional war ever fought between regular armies of developing countries.

Black May, also known as "Bloody May", was a series of mass protests and subsequent crackdowns by the Thai military and royal police in Bangkok in May 1992. A rally of over 200,000 people led by Chamlong Srimuang was held on 17 May, caused by the extending of the military regime of Suchinda Kraprayoon, the 1991 Thai coup d'état leader. An estimated 52 to 100 protesters were killed, 696 were injured, and 175 had "disappeared" afterwards. King Bhumibol Adulyadej summoned both Chamlong and Suchinda on 20 May, and the Suchinda regime later received a sweeping amnesty along with other law reforms, signed by Bhumibol.

On May 17, 1995, 35-year-old Shawn Timothy Nelson stole an M60A3 tank from a local California Army National Guard armory in San Diego and drove six miles (9.7 km) through nearby neighborhoods, crushing cars and infrastructure in his path—though without injuring anyone.

Same-sex marriage, also known as gay marriage or same-gender marriage, is the marriage of two people of the same legal sex or gender. As of 2025, marriage between same-sex couples is legally performed and recognized in 38 countries, with a total population of 1.5 billion people. The most recent jurisdiction to legalize same-sex marriage is Thailand.

North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korean Peninsula and borders China and Russia to the north at the Yalu (Amnok) and Tumen rivers, and South Korea to the south at the Korean Demilitarized Zone (DMZ). The country's western border is formed by the Yellow Sea, while its eastern border is defined by the Sea of Japan. Pyongyang is the capital and largest city.

On 17 May 2014, an Antonov An-74 transport aircraft of the Lao People's Liberation Army Air Force crashed while en route to Xiangkhouang Province, northern Laos, killing all but one of the 17 people on board. Among the victims were several Laotian politicians travelling to attend a ceremony celebrating the 55th anniversary of the second division of the Lao People's Army.