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the planet Mars
The Mariner 9 exploration of Mars was a good demonstration of how science and technology literally open new worlds for discovery.
the opening ceremony in the Panathenaic Stadium
In April 1896, participants from 14 countries converged on Athens to compete in a festival that was simultaneously ancient and modern.
resident Harry Truman, left, congratulates Gen. George Marshall (architect of the Marshall Plan) , Fair Use via AP
The Marshall Plan, signed into law by President Harry Truman on April 3, 1948, was intended to revive the economies of war-torn Western Europe.
Armed United Mine Workers of America strikers, Ludlow 1914, Public Domain
Today, Ludlow, Colorado is a ghost town, yet it remains the site of the deadliest labor war in American history in 1914.
Top back row: Toyama Mitsuru, Abraham Woodhull, Aldrich Ames, Francis Walsingham, Front Row is Adolf G. Tolkachev, Mata Hari, Klaus Fuchs, and Elizabeth Van Lew
Espionage has become more complex and increasingly valuable. The times change, but spies remain.
Korean politicians at a podium
On March 12, 2004, South Korea’s then President Roh Moo-hyun was impeached, a historic first for the Republic.
1878 painting of Martin Luther and his followers by Julius Hubner
On October 31, 1517, Martin Luther, a monk and professor of theology at the University of Wittenberg, circulated his 95 Theses—95 statements critiquing what he saw as papal abuses of power.
Idi Amin addresses troops during a visit to border regions
When Idi Amin, commander of the Ugandan Army, seized power in Uganda on 25 January 1971, there was hope among many Ugandans that a new beginning beckoned.
Bob Campbell Photograph Of Dian Fossey Filming Orphaned Gorillas Coco And Pucker, Rwanda 1969, Bob Campbell
Fossey replaced a fallacious stereotype of a King Kong-like, violent gorilla with an almost idealized image of a gorilla that was intelligent, family-oriented and peaceful.
a group of male Mexican immigrants standing in a field
In May 1954, the U.S. Border Patrol enacted “Operation Wetback,” a campaign to deport Mexican workers who were in the country illegally.
Muhammad Ali and Joe Frazier
George Foreman’s 1974 heavyweight title defense against Muhammad Ali on October 30, 1974, in Kinshasa, Zaire was a major turning point in the careers of both men.
Betty Friedan
Friedan’s book encouraged women to break free of what she called “the feminine mystique,” a concept insisting that women’s true fulfillment was to be found through dedication to household labor and their roles as wives and mothers.
women Labeling and packing Iletin brand insulin, 1924, National Museum of American History, CC BY-NC-ND 2.0 DEED
Although observations and attempted treatments of diabetes date back to ancient times, the most important milestone occurred when a new treatment—insulin injection—was first successfully used on January 23, 1922.
Defendants hearing verdict, Nuremberg Trial Photographs, United States Holocaust Memorial Museum Collection, Gift of Elizabeth Duddy
Beginning on November 20, 1945, the International Military Tribunal consisting of representatives from the United States, Great Britain, France, and the Soviet Union worked together to bring 22 former Nazi leaders and their organizations to justice.
The Emperor Augustus Rebuking Cornelius Cinna for his treachery
Augustus had an almost unmatched impact on Roman politics, culture, and society and—through the widespread influence of Rome—on the way modern countries structure and imagine themselves.
U.S.S. Arizona on fire after the Bombing of Pearl Harbor
Few place names in American history produce such a visceral response as Pearl Harbor, the Hawaiian bay that housed the U.S. Pacific Fleet in 1941.
Crewmen of the amphibious cargo ship USS Durham take on Vietnamese refugees in 1975
On July 28, 1951, representatives of 26 states, meeting in Geneva under the auspices of the United Nations, signed the Convention Relating to the Status of Refugees.
Rosetta Tharpe holding a guitar, Lucky Milliner and Moe Gayle in 1941
Rosetta Tharpe crossed many boundaries: of genre (playing both gospel and secular music), of gender (playing in a “male” style on a “male” instrument), and even of sexuality.
General Sandino and Staff standing near a car
On July 1, 1927, the Nicaraguan revolutionary leader Augusto Nicolás Calderón de Sandino, a.k.a. Augusto “César” Sandino, proclaimed his manifesto extolling continued Nicaraguan resistance against U.S. intervention in his country.
people at the League of Nations assembly, 15 November 1920 at the Reformation Hall in Geneva, National Library of Norway
Besides the Wilsonian internationalists, who wanted the Treaty and Covenant ratified unchanged, there were those who wanted to add so-called reservations to the treaties: conditions to U.S. acceptance and participation in the League.
FLN soldiers next to an Algerian Flag, by Zdravki Pecar, CC BY-SA 4.0
On Sunday, 18 March 1962, the Algerian War for Independence came to an end.
Soldiers aiming guns at two men in May 1848 in Dresden
On March 9, 1848, the twenty-three members of the Hanau People’s Commission—leading citizens of the small German city on the Main River, upstream from Frankfurt—declared their participation in the quickly-spreading upheaval of the March 1848 Revolutions.
Wrangell-St Elias Natl Park by CheWei Chang, Flickr, CC BY-ND 2.0
When you “pair the intellect with emotion and place,” what often results is a moment of insight: an unexpected instance where you suddenly understand something deeper about history, about nature, about others, about yourself.
people holding signs protesting China's occupation of Tibet
On May 23rd 1951, the Seventeen Point Agreement of the Central People’s Government and the Local Government of Tibet on Measures for the Peaceful Liberation of Tibet was signed.
Ferry Derry Corner in Northern Ireland. Text on side of building reads You are now entering Free Derry hands up don't shoot
Fifty years ago, in December 1969, the Provisional IRA was born from the widespread religious violence that had wracked the six counties of Northern Ireland since the preceding August.
Robert Smalls and C.S.S. Planter
Robert Smalls' leadership and courage made him important to the Union war effort and, afterwards, one of the most influential Black political leaders of the 19th century.
Mount Fuji from Omiya by Kusakabe Kimbei c. 1890
Japan’s Meiji Restoration, or Meiji Ishin, occurred on January 3, 1868, and marked the return of the Japanese emperor to a position of power for the first time in more than 500 years.
Scene from the 1975 Conference on Women. Interior of a large auditorium. Panel of people are sitting on a stage. The conference logo of a women's symbol and bird are above the stage.
In 1975, the first United Nations World Conference on Women took place between 19 June and 2 July in Mexico City, bringing together individuals from a wide range of backgrounds with the goal of promoting gender equality.
suffragettes in a car with U.S. flag and two signs that read Votes for Women
The Nineteenth Amendment to the U.S. Constitution was ratified on August 18, 1920.
The Beatles running down a street toward the camera
After John, Paul, George and Ringo brought the British Invasion across the Atlantic, rock and roll saw a resurgence that helped cement what many people called “race music” as a core part of American identity.
Exterior view of the Stonewall Inn
An uprising on June 28th, 1969 at New York's Stonewall Inn has become iconic as the spark for a new radical lesbian and gay activism.
Carrie Buck (left) and her mother (right)
Among the many states with eugenics legislation, Virginia is infamous for its legal campaign to forcibly sterilize Carrie Buck in 1927 and thereby entrench sterilization abuse as the law of the land.
The Boston Massacre March 5, 1770 painting by William L. Champney depicting British soldiers with guns raised toward Black man
The “Boston Massacre,” was a turning-point in relations between American colonists and British authorities, and provided one of the sparks that would ignite the American Revolution.
An allotment delegation approaches the Nez Perce
The 1887 passage of the Dawes Act upended this system of communal land ownership and, in doing so, struck a historic blow at Native Americans’ political rights, economic sufficiency, and cultural heritage.
Ilya Repin's late 19th-century painting, "The Zaporozhian Cossacks Replying to the Sultan"
The Zaporozhian Cossacks were a daring and fearsome people of the fifteenth through eighteenth centuries whose adventures fill Ukrainian lore and inspire an enduring Ukrainian spirit of independence and daring.
Bartholomew I, the Ecumenical Patriarch of Constantinople, signs the tomos (January 5, 2019) that officially established the Orthodox Church of Ukraine and granted it autocephaly.
Many observers have been surprised that this war has a religious dimension. Yet its roots lie in the intertwined but separate religious histories of Ukraine and Russia.
National Guard Soldiers wearing gas masks and holding rifles
Just past noon on Monday, May 4, 1970, a squadron of Ohio National Guardsmen opened fire at a loose collection of students gathered across an expanse of leafy lawns and campus parking lots at Kent State University in northeastern Ohio.
The 114 infantry in Paris, July 14, 1927, Leon Gimpel
On the eleventh hour of the eleventh day of the eleventh month, the Armistice went into effect, silencing the guns of the Western Front and ending the First World War. Or so the story goes.
artwork, 32 Campbell's Soup Cans by Andy Warhol
Andy Warhol’s 32 Campbell’s Soup Cans have become a canonical symbol of American Pop Art.
Captain America punching Hitler
Created by writer Joe Simon and artist Jack Kirby in the eponymous Captain America Comics #1, the patriotic hero became a breakout star for Timely Comics.
Nigerians use phone booth under a poster against Biafran separatists and their leader, General C. Odumegwu Ojuku. 1967.
Barely three years after independence from British colonial rule, Nigeria, the most populous nation in Africa, collapsed into a civil war.
Someone's hand holding a paper strip up to a Guatemalan woman's arm. The woman's arm has a white strip on it.
Between 1946-1948, around 1,500 people in Guatemala—including prisoners, soldiers, prostitutes, psychiatric patients, and children—were enrolled without consent in unethical studies related to the testing and treatment of sexually transmitted infections.
Paratroopers of teh 2nd RPC firing a 106 mm SR recoilless gun at an Egyptian resistance point on an Egyptian resistance point in Port Said
In July 1956, the international order was disrupted by the Suez Crisis, a complicated imbroglio marked by the intersection of European decolonization, the Arab-Israeli conflict, the Cold War, and the growth of U.S. power.
The ruins of Cassino, May 1944 - a wrecked Sherman tank and Bailey bridge in the foreground, with Monastery Ridge and Castle Hill
World War II was a total war—a mobilization of nearly all human and natural resources.
UPA soldiers charge
The region of western Ukraine makes up just a small percentage of the territory and population of present-day Ukraine, but has historically played an outsized role in the 20th century struggles for control of eastern Europe.
Astronaut Buzz Aldrin salutes United States Flag while standing on the moon
On July 21, 1969, American astronaut Neil Armstrong became the first human being to set foot on an entirely different world.
The Arrow Incident on October 8 1856
March 3, 1857 marked the unofficial beginning of the so-called Second Opium War (officially 1856-1860).
Liu Bang
Liu Bang rose from obscurity to be crowned emperor of China 2215 years ago on the 28th of February, 202 BCE.