May 22nd

Royal Thai Armed Forces, led by General Prayut Chan-o-cha stage a coup in Thailand, suspending the kingdom's constitution and taking control of the government, the 12th since the country's first coup in 1932.
Yingluck Shinawatra
Tokyo Skytree, which at 634 meters high is the tallest tower in the world, opened to the public.
Tokyo Skytree
At least 140 people are killed and hundreds more injured as a three-quarter-mile-wide tornado hits Joplin, Missouri. The tornado is among the deadliest in the nation's history, destroying nearly a third of the city and damaging about 2,000 buildings, including water treatment and sewage plants.
List of Canadian tornadoes and tornado outbreaks
The worst air crash involving a Boeing 737 kills 158. Air India Express Flight 812 overshot the runway on landing at Mangalore International Airport. It fell over a cliff and burst into flames. The 737 is the world's most widely flown aircraft.
Air India Express Flight 812
The UN Security Council approved a resolution lifting the economic sanctions against Iraq and supporting the U.S.-led administration in Iraq.
UN sanctions against Iraq
Johnny Carson hosted the last episode of his Tonight Show.
The Tonight Show Starring Johnny Carson
North Yemen and South Yemen merged to form the Republic of Yemen.
Yemeni unification
The arcade game Pac-Man is released. The game featuring a dot-munching round yellow figure moving through a maze has become one of the best-known video games in history. It was produced by Namco.
Richard Nixon arrived in Moscow, becoming the first U.S. president to visit the Soviet Union.
1972 Nixon visit to China
The most violent earthquake in recorded history hits Chile. The Great Chilean Earthquake rated 9.5 on the moment magnitude scale. According to estimates, between 2230 and 6000 people were killed.
1960 Valdivia earthquake
Harry S. Truman's Doctrine brought aid to Greece and Turkey to combat the spread of Communism.
Truman Doctrine
First US rocket (WAC Corporal) to reach edge of space fired from White Sands Missile Range New Mexico.
WAC Corporal
Adolf Hitler & Benito Mussolini sign "Pact of Steel".
1939 in Germany
An earthquake near Xining, China, measuring 8.3 claimed approximately 200,000 victims.
The Wright brothers' flying machine is patented. The American aviation pioneers are credited with having performed “the first sustained and controlled heavier-than-air powered flight.” (Fédération Aéronautique Internationale)
Wright brothers patent war
Abraham Lincoln received patent number 6469 for his floating dry dock.
Abraham Lincoln's patent
1st wagon train with 700 - 1000 migrants, departs Independence, Missouri for Oregon.
Oregon Trail
The first life insurance policy in the United States was issued in Philadelphia.
History of insurance
1st atlas 'Theatrum Orbis Terrarum' (Theatre of the World), published by Abraham Ortelius in Antwerp with 70 maps.
Theatrum Orbis Terrarum
The first battle in the 30-year War of Roses took place at St. Albans.
Wars of the Roses