We are building the world’s largest database of social change milestones, from the first fire to today’s good news. Change is not only possible, it has happened consistently throughout human history.
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- Tomorrow (2025 C.E. - ???)
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- Post-modernity (1945 - 2016 C.E.)
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Era
- Tomorrow (2025 C.E. - ???)
- Today (2017 C.E. - 2024 C.E.)
- Post-modernity (1945 - 2016 C.E.)
- Modernity (1500 - 1945 C.E.)
- Post-classical (500 - 1500 C.E.)
- Civilization (3000 B.C.E. - 500 C.E.)
- Agriculture (10000 - 3000 B.C.E.)
- Prehistory (250000 - 10000 B.C.E.)
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1884 C.E. February 2
Oxford English Dictionary debuts
The Oxford English Dictionary is now the principal historical dictionary of the English language, published by Oxford University Press.
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1874 C.E. April 15
First ‘Impressionist’ art exhibition opens in Paris, featuring Monet, Degas, Renoir, and others
Impressionism is an art movement that took the French art world—and later the artistic spheres of other countries —by storm in the 19th century.
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1872 C.E.
The U.S. formally establishes Yellowstone National Park, the world’s first national park
Although individual countries designate their own national parks differently, there is a common idea: the conservation of 'wild nature' for posterity and as a symbol of national pride. As of 2023, there are over 6500 national parks worldwide.
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1864 C.E. August 23
The First Geneva Convention is signed by 12 nations
The 1864 Geneva Convention was the world's first codified international treaty that covered the sick and wounded soldiers on the battlefield.
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1821 C.E. September 15
The Act of Independence of Central America proclaims the independence of Central America from the Spanish Empire
The Act led to the eventual formation of the modern nations of Costa Rica, Guatemala, El Salvador, Honduras, and Nicaragua.
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1807 C.E. March 3
U.S. Congress abolishes the African slave trade
The U.S. Congress passed an act to “prohibit the importation of slaves into any port or place within the jurisdiction of the United States…from any foreign kingdom, place, or country.”
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1796 C.E.
British physician Edward Jenner develops first-ever successful vaccine
In the West, Jenner is often called "the father of immunology", and his work is said to have "saved more lives than the work of any other human".
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1971 C.E. December 15
U.S. Bill of Rights ratified, become first 10 amendments of the U.S. Constitution
The Bill of Rights amendments add specific guarantees of personal freedoms and rights, clear limitations on the government's power in judicial and other proceedings, and explicit declarations that all powers not specifically granted to the federal government by the Constitution are reserved to the states or the people.
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1790 C.E. September 25
Four great Anhui troupes introduce Anhui opera to Beijing for first time
Hui opera, or Huiju, remains as a popular regional genre of Chinese opera. It is now most prominent in the area around Huangshan City and Chizhou, as well as Wuyuan County, Jiangxi.
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311 C.E.
Roman Emperor Galerius issues Edict of Serdica, ending persercution of Christians in the Roman Empire
The Edict implicitly granted Christianity the status of religio licita, a worship that was recognized and accepted by the Roman Empire.
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2017 C.E. April 19
Green bond issuance up 42% in first quarter of 2017
Globally, total green bonds issuance stood at $21.76 billion during the first quarter of 2017, up nearly 42 per cent from the issuance during the same period last year, according to the Climate Bonds Initiative.
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2017 C.E. April 19
Kansas City votes to eliminate jail time for marijuana possession
Voters in Kansas City voted overwhelmingly on Tuesday to eliminate the possibility of jail time for people caught with small amounts of marijuana or related paraphernalia.
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2017 C.E. April 19
Kentucky coal company announces plans to build the state’s largest solar farm
Berkeley Energy Group, the coal company behind the project, billed it as the first large-scale solar farm in the Appalachian region, which has been hit hard by the decades-long decline in the U.S. coal industry.
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2017 C.E. April 19
Millions of Venezuelans join the Mother of All Marches
The Mother of All Marches, also known as the Mother of All Protests, was a day of protests held on April 19, 2017 in Venezuela against the Chavista government of president Nicolás Maduro.
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2017 C.E. April 14
California is getting so much power from solar that wholesale electricity prices are turning negative
For the first time, more than half the power needs of the entire state came from solar power for a few hours that day, according to the US Energy Information Administration (EIA).
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2017 C.E. April 14
Portland, OR commits to 100 percent renewable energy by 2050
Leaders from the City of Portland and Multnomah County have committed to 100 percent clean energy by the year 2050.
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2017 C.E. April 11
Wolf population in Oregon continues to grow
This week, fish and wildlife officials said the wolf population passed a significant milestone. Biologists counted at least seven or more breeding pairs in a broad swath of Eastern Oregon for the third consecutive year.
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2017 C.E. April 10
New York grants free tuition for all state colleges
New York just became the first state in the nation to make tuition free for middle class students at both two- and four-year public colleges.
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2017 C.E. April 5
Japan has officially recognized a same-sex couple as foster parents
Japan has officially recognised a same-sex couple as foster parents, marking a first for the country and signalling a growing recognition of LGBTQ rights in Japan.
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2017 C.E. March 31
Rikers Island prison to close, New York mayor says
De Blasio set a timeline of 10 years to reduce the overall jail population in the city, which he said would allow for a "complete departure of all inmates from Rikers Island."