20th century

time period between January 1, 1901, and ended on December 31, 2000

File:1990s decade montage.png|From top left, clockwise: The Hubble Space Telescope orbits the Earth after it was launched in 1990; American jets fly over burning oil fields in the 1991 Gulf War; the Oslo Accords on 13 September 1993; the World Wide Web gains massive popularity worldwide; Boris Yeltsin greets crowds after the failed August Coup, which leads to the dissolution of the Soviet Union on 26 December 1991; Dolly the sheep is the first mammal to be cloned from an adult somatic cell; the funeral procession of Diana, Princess of Wales, who died in a 1997 car crash, and was mourned by bil

File:1980s replacement montage02.PNG|thumb|335px|From top left, clockwise: The first Space Shuttle, Columbia, lifts off in 1981; US president Ronald Reagan and Soviet leader Mikhail Gorbachev ease tensions between the two superpowers, leading to the end of the Cold War; The fall of the Berlin Wall in 1989 is considered to be one of the most momentous events of the 1980s; In 1981, the IBM Personal Computer is released; In 1985, the Live Aid concert is held in order to fund relief efforts for the famine in Ethiopia during the time Mengistu Haile Mariam ruled the country; Pollution and ecological

File:2000s decade montage3.png|From top left, clockwise: The Twin Towers of the original World Trade Center on fire and the Statue of Liberty on the left during the terrorist attacks on September 11, 2001; the euro enters into European currency in 2002; a statue of Saddam Hussein being toppled during the Iraq War in 2003, and in 2006, Hussein would be executed for crimes against humanity; U.S. troops heading toward an army helicopter in Afghanistan during the war on terror; social media platforms and the internet become widely popular; a Chinese soldier gazes at the 2008 Summer Olympics commen

File:1970s decade montage.jpg| Clockwise from top left: U.S. President Richard Nixon doing the V for Victory sign after his resignation from office following the Watergate scandal in 1974; The United States was still involved in the Vietnam War in the early decade. The New York Times leaked information regarding the nation's involvement in the war. Political pressure led to America's withdrawal from the war in 1973, and the Fall of Saigon in 1975 leading to evacuations of South Vietnamese that same year; the 1973 oil crisis causes a financial crisis throughout the developed world; both the lea

File:1960s montage.png|Clockwise from top left: U.S. soldiers during the Vietnam War; the Beatles led the British Invasion of the U.S. music market that subsequently spread worldwide, pictured here first landing in the U.S. in 1964; a half-a-million people participate in the 1969 Woodstock Festival; Neil Armstrong and Buzz Aldrin walk on the Moon during the Cold War-era Space Race; the Stonewall riots mark the beginning of the gay liberation movement; China's Mao Zedong initiates the Great Leap Forward plan which fails and brings mass starvation in which 15 to 55 million people died by 1961, a

File:1950s decade montage.png|370x370px|thumb|right|Top, L-R: U.S. Marines engaged in street fighting during the Korean War, late September 1950; The first polio vaccine is developed by Jonas Salk.Centre, L-R: US tests its first thermonuclear bomb with code name Ivy Mike in 1952. A 1954 thermonuclear test, code named Castle Romeo; In 1959, Fidel Castro overthrows Fulgencio Batista in the Cuban Revolution, which results in the creation of the first and only communist government in the Western Hemisphere; Elvis Presley becomes the leading figure of the newly popular music genre of rock and roll

File:1930s decade montage.png|From left, clockwise: Dorothea Lange's photo of the homeless Florence Thompson shows the effects of the Great Depression; due to extreme drought conditions, farms across the south-central United States become dry and the Dust Bowl spreads; The Empire of Japan invades China, which eventually leads to the Second Sino-Japanese War. In 1937, Japanese soldiers massacre civilians in Nanjing; aviator Amelia Earhart becomes an American flight icon; German dictator Adolf Hitler and the Nazi Party attempt to establish a New Order of German hegemony in Europe, which culminat

File:1910s montage.png|From left, clockwise: the Ford Model T is introduced in 1908 and becomes widespread in the 1910s; the sinking of the RMS Titanic in 1912 causes the deaths of nearly 1,500 people and attracts global and historical attention; CONTEXT: all the events below are part of World War I (1914–1918); French Army lookout at his observation post in 1917; Russian troops awaiting a German attack; a ration party of the Royal Irish Rifles in a communication trench during the Battle of the Somme; Vladimir Lenin addresses a crowd in the midst of the Russian Revolution, beginning in 1917; T

File:1940s decade montage.png|Above title bar: events during World War II (1939–1945): From left to right: Troops in an LCVP landing craft approaching Omaha Beach on D-Day; Adolf Hitler visits Paris, soon after the Battle of France; The Holocaust occurs as Nazi Germany carries out a programme of systematic state-sponsored genocide, during which approximately six million European Jews are killed; The Japanese attack on the American naval base of Pearl Harbor launches the United States into the war; An Observer Corps spotter scans the skies of London during the Battle of Britain and The Blitz; T

File:1900s decademontage2.png|335px|thumb|right|From left, clockwise: the Wright brothers achieve the first manned flight with a motorized airplane, in Kitty Hawk in 1903; a missionary points to the severed hand of a Congolese villager, symbolic of Belgian atrocities in the Congo Free State, which ended in 1908; the 1908 Messina earthquake kills 75,000–82,000 people and becomes the most destructive earthquake ever to strike Europe; the United States gains control over the Philippines in 1902, after the Philippine–American War; rock being moved to construct the Panama Canal in 1907; Admiral Tog

Generation Z, often shortened to Gen Z and informally known as Zoomers, is the demographic cohort succeeding Millennials and preceding Generation Alpha. Researchers and popular media use the mid-to-late 1990s as starting birth years and the early 2010s as ending birth years, with the generation typically being defined as people born from 1997 to 2012. Most members of Generation Z are the children of members of Generation X, and it is predicted that many will be the parents of members of Generation Beta.

Millennials, also known as Generation Y or Gen Y, are the demographic cohort following Generation X and preceding Generation Z. Researchers and popular media use the early 1980s as starting birth years and the mid-1990s to early 2000s as ending birth years, with the generation typically being defined as people born from 1981 to 1996. Most millennials are the children of baby boomers and older members of Generation X, and are often the parents of members of Generation Alpha.

cohort succeeding the Baby Boomers, born from 1965 to 1980

generation that came of age during World War I, born from 1883 to 1900

cohort born between 1946 and 1964, during the mid-20th century baby boom

group of historians

historical period started in 1957

cohort succeeding the Greatest Generation, born from 1928 to 1945

Postmodernity (post-modernity or the postmodern condition) is the economic or cultural state or condition of society which is said to exist after modernity. The idea of the postmodern condition is sometimes characterized as a culture stripped of its capacity to function in any linear or autonomous state like regressive isolationism, as opposed to the progressive mind state of modernism.

cohort succeeding the Lost Generation, born from 1901 to 1927

Shortening of glaciers by melting of their ice in warmer locations

1992 non-fiction work by Francis Fukuyama

period of history (1945–)

term for an international social group of wealthy people who travel the world and participate in social activities unavailable to ordinary people

Zillennials, occasionally called Zennials, are a social cohort encompassing people born on the cusp of or during the latter years of the Millennial generation and the early years of Generation Z. Sources typically give ranges of those born from 1993 to 1998, though some extend this further in either direction. Their adjacency between the two generations and limited age set has led to their characterization as a "micro-generation". They are generally the children of younger Baby Boomers and older Gen Xers. Estimates of the U.S. population in this cohort range from 30 million to 48 million.

historical period characterized by the political, economic, and cultural ascendancy of the United States

historical era

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period of history starting in the 1760s

era in history

term used by Kurt Schwitters

plan envisioned by former U.S. President George H.W. Bush with crewed Moon and Mars missions