| Hint | Year | % Correct |
|---|---|---|
| September 11 attacks | 2001 | 100%
|
| End of WW1 in the Treaty of Versailles | 1918 | 96%
|
| End of WW2 with the surrender of Japan | 1945 | 96%
|
| Dissolution of the Soviet Union | 1991 | 93%
|
| Assassination of Martin Luther King Jr. | 1968 | 86%
|
| Soviet Union tests its first nuclear bomb | 1949 | 79%
|
| Election of Abraham Lincoln | 1861 | 71%
|
| Adolf Hitler becomes chancellor of Nazi Germany | 1933 | 68%
|
| Mao Zedong declares the the People’s Republic of China | 1949 | 64%
|
| First inauguration of Franklin Roosevelt | 1933 | 63%
|
| Watergate break-in scandal leads to Nixon resigning | 1972 | 63%
|
| Fall of Saigon and the reunification of Vietnam | 1975 | 61%
|
| Sputnik becomes the first artificial Earth satellite | 1957 | 59%
|
| The USSR invaded Czechoslovakia in the Prague Spring | 1968 | 59%
|
| Tiananmen Square Massacre | 1989 | 59%
|
| Inauguration of George Washington | 1789 | 57%
|
| Fall of the Berlin Wall | 1989 | 55%
|
| Start of the invasion of Ukraine | 2022 | 55%
|
| Sinking of the Lusitania | 1915 | 54%
|
| Formation of the Union of Soviet Socialist Republics | 1922 | 54%
|
| United States tests its first hydrogen bomb | 1949 | 54%
|
| Release of OpenAI o1 model | 2024 | 52%
|
| Execution by guillotine of Maximilien Robespierre | 1794 | 50%
|
| Ronald Reagan is inaugurated as president of the US | 1981 | 50%
|
| Invasion of Iraq to overthrow Hussein’s regime | 2003 | 50%
|
| Xi Jinping becomes the president of China | 2013 | 50%
|
| Hundreds of thousands killed in the Nanjing Massacre | 1937 | 48%
|
| Intolerable Acts passed after the Boston Tea Party | 1774 | 46%
|
| Treaty of Brest-Litovsk ends the Eastern front in WW1 | 1918 | 46%
|
| Start of Gulf War to liberate Kuwait from Iraqi occupation | 1990 | 46%
|
| USA PATRIOT Act expands surveillance | 2001 | 46%
|
| Roe v. Wade is passed, protecting women’s abortion rights | 1973 | 45%
|
| China joins the World Trade Organization | 2001 | 45%
|
| Passage of the Civil Rights Act, outlawing segregation | 1964 | 43%
|
| Iranian Revolution creates the Islamic Republic | 1979 | 43%
|
| George Orwell publishes 1984 | 1949 | 41%
|
| Death of Stalin | 1953 | 41%
|
| Mikhail Gorbachev becomes leader of the Soviet Union | 1985 | 41%
|
| English settlers land in Jamestown | 1607 | 39%
|
| Battle of Antietam is the deadliest one-day battle in the US | 1862 | 39%
|
| Beginning of the Holodomor | 1932 | 39%
|
| Beginning of the Franco-Prussian War | 1870 | 38%
|
| Khrushchev’s “Secret Speech” condemns the rule of Stalin | 1956 | 38%
|
| Maastricht Treaty is signed, creating the European Union | 1992 | 38%
|
| The Articles of Confederation are ratified | 1781 | 36%
|
| Invasion of Indochina by Japan | 1940 | 36%
|
| The US leaves the gold standard as the Nixon Shock | 1971 | 36%
|
| End of the Shōwa era in Japan | 1989 | 36%
|
| Haiti wins its independence from France | 1804 | 34%
|
| Andrew Jackson is inaugurated as president of the US | 1829 | 34%
|
| Trotsky is exiled from the USSR after a political struggle | 1929 | 34%
|
| Start of the Great Leap Forward | 1958 | 34%
|
| Liu Shaoqi dies in imprisoned after being purged by Mao | 1969 | 34%
|
| The Dow Jones plummets 22.6% on Black Monday | 1987 | 34%
|
| The Communist Manifesto is published by Marx and Engels | 1848 | 32%
|
| Huey Long delivers his “Share Our Wealth” speech | 1934 | 32%
|
| Rachel Carson publishes Silent Spring | 1962 | 32%
|
| Miranda v. Arizona leads to the Miranda rights | 1966 | 32%
|
| Okinawa is returned to Japanese sovereignty | 1972 | 32%
|
| Deng Xiaoping becomes the paramount leader of the PRC | 1978 | 32%
|
| June Democratic Struggle leads to democracy in Korea | 1987 | 32%
|
| North American Free Trade Agreement comes into effect | 1994 | 32%
|
| Benazir Bhutto is assassinated in Rawalpindi | 2007 | 32%
|
| Obergefell v. Hodges legalizes same-sex marriage | 2015 | 32%
|
| Start of the Meiji Restoration | 1868 | 30%
|
| Start of the Russo-Japanese War in Port Arthur | 1904 | 30%
|
| Theodore Roosevelt creates the Progressive Party | 1912 | 30%
|
| May 15 incident, an attempted coup d’etat in Japan | 1932 | 30%
|
| Xi’an Incident kidnapping leads to the Second United Front | 1936 | 30%
|
| Race riots in Los Angeles, Detroit, New York City, etc. | 1943 | 30%
|
| Hart-Celler Act shifts US immigration to Latin America, Asia | 1965 | 30%
|
| Gwangju Uprising is suppressed by South Korean military | 1980 | 30%
|
| Shenzhen becomes China’s first Special Economic Zone | 1980 | 30%
|
| Belt and Road Initiative launched by Xi Jinping | 2013 | 30%
|
| 60 killed in Las Vegas shooting in the Route 91 Harvest | 2017 | 30%
|
| Treaty of Guadalupe-Hidalgo | 1848 | 29%
|
| Transcontinental Railroad is completed | 1869 | 29%
|
| Satsuma Rebellion against the modernization of Japan | 1877 | 29%
|
| Supreme Court case Korematsu v. United States | 1944 | 29%
|
| Peak of the Great Chinese Famine | 1960 | 29%
|
| India develops its first nuclear bomb, the Smiling Buddha | 1974 | 29%
|
| Sampoong Department Store collapse | 1995 | 29%
|
| Charlemagne is crowned as the Holy Roman Empire | 800 | 29%
|
| Fall of Constantinople by Sultan Mehmed II | 1453 | 27%
|
| Missouri Compromise | 1820 | 27%
|
| Great Chicago Fire | 1871 | 27%
|
| Overthrow of the Hawaiian Kingdom against Liliuokalani | 1893 | 27%
|
| Treaty of Shimonoseki ends the First Sino-Japanese War | 1895 | 27%
|
| Landmark Supreme Court case Plessy v. Ferguson | 1896 | 27%
|
| First War of Indian Independence / Sepoy Rebellion | 1857 | 25%
|
| Treaty of Tientsin ends the Second Opium War | 1858 | 25%
|
| April Uprising, a Bulgarian revolt in the Ottoman Empire | 1876 | 25%
|
| Xinhai Revolution ends the Qing Dynasty | 1911 | 25%
|
| Johnson-Reed Act limits immigration with nation quotas | 1924 | 25%
|
| Shanghai Massacre ends the First United Front | 1927 | 25%
|
| Luther publishes his Ninety-five Theses in Wittenberg | 1517 | 23%
|
| Defenestration of Prague catalyzed the Thirty Year’s War | 1618 | 23%
|
| Treaty of Nanking ends the First opium War | 1842 | 23%
|
| Glorious Revolution overthrows King James II of England | 1688 | 21%
|
| The Treaty of Tordesillas between Portugal and Castille | 1494 | 18%
|