October 27th

Roman Emperor Constantine the Great is said to have received his famous Vision of the Cross.
Constantine the Great
After an 86 year wait, the Boston Red Sox finally captured a World Series trophy.
Boston Red Sox
Shooting in the Armenian Parliament. 8 people, including the country’s prime minister, Vazgen Sargsyan and Speaker Karen Demirchyan, were killed when armed gunmen shot at the members of the Armenian National Assembly. The gunmen claimed that they were there to carry out a coup and that the prime minister was their target. The siege ended after the Armenian troops surrounded the parliament building and the gunmen surrendered.
Armenian parliament shooting
The Dow Jones industrial average fell 554.26 points, forcing the stock market to shut down.
Turkmenistan Declares Independence from the Soviet Union. The Central Asian country had been a separate republic of the USSR since 1925. Saparmurat Niyazov, the head of the country under the Soviets, continued ruling the country under the title of President for Life until his death in 2006. The day is annually celebrated in the country as Independence Day.
Independence Day (Turkmenistan)
British government deregulates financial markets in a "Big Bang", enhancing London's status as a financial capital while increasing income inequality.
London Stock Exchange
China announces its population has reached 1 billion plus people.
Television in China
Egyptian President Anwar Sadat and Israeli Prime Minister Menachem Begin were named winners of the Nobel Peace Prize for their work toward a Middle East accord.
Anwar Sadat
Black Saturday - Russian nuclear missile crisis in Cuba.
Black Saturday
Du Pont announced that it would name its new synthetic yarn nylon.
New York City's first rapid transit subway, the IRT, opened.
Interborough Rapid Transit Company
State of Missouri Passes the Extermination Order. Governor Lilburn Boggs signed Missouri Executive Order 44 as a result of the Battle of Crooked River which took place a few days earlier on October 24-25. The fight occurred between Mormon forces and a Missouri state militia and it resulted in 4 fatalities. The executive order ruled that ‘all Mormons were to be treated as enemies and that they must be exterminated or driven out of the state for public peace.' The order forced members of the Church of Latter Day Saints to migrate from Missouri to Illinois.
Missouri Executive Order 44
Pinckney's Treaty [Treaty of San Lorenzo] signed by Spain and US, establishing the southern boundary of the US and giving Americans right to navigate the Mississippi River.
Spain–United States relations
The first of the Federalist Papers, which called for the ratification of the U.S. Constitution, was published.
Anti-Federalist Papers
City of Philadelphia Founded. The historical city in the State of Pennsylvania was founded by English entrepreneur, William Penn. Penn received the land as a payment to fulfill a debt that King Charles II owed to Penn’s father. Philadelphia is the only UNESCO-declared World Heritage City in the United States and it was temporarily the capital of the United States in the 1800s.
History of Philadelphia
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