United States

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Olympic Broadcasting Services covering the men's 10 kilometre marathon swim at the 2012 Olympic Games.
The Big Game on the Small Screen: The Televised Transformation of Sport
Fourth of July celebration in Philadelphia, 1819.
The United States: Democracy or Republic?
Ippolito Caffi's Eclisse di sole alle Fondamenta, Nove 1842, a solar eclipse and people standing on a shore looking up at it
Solar Eclipses in American History
The 1969 Harlem Cultural Festival
Black Woodstock: The 1969 Harlem Cultural Festival
Count Gaston de Chasseloup-Laubat aboard his Jeantaud electric car, 1899.
The Historical Dominance of the Electric Car
SpaghettiOs in background, tv dinner, Tang bottle, Spam tin and Jello mold in foreground
SpaghettiOs and the Age of Processed Foods
A Nuclear Power Plant in the Untied Kingdom against a blue sky.
How Green Is the Atom?
resident Harry Truman, left, congratulates Gen. George Marshall (architect of the Marshall Plan) , Fair Use via AP
The Marshall Plan
Armed United Mine Workers of America strikers, Ludlow 1914, Public Domain
The Ludlow Massacre: Fighting for Workers’ Rights, 1914
Bird's-eye view of the 1993 border blockade enacted by CBP Border Patrol agents in El Paso, Texas as part of Operation Hold the Line.
Fortifying the U.S.-Mexico Boundary: The 1993 “Hold the Line” Experiment
Bird's-eye view of the 1993 border blockade enacted by CBP Border Patrol agents in El Paso, Texas as part of Operation Hold the Line.
Fortificación de la frontera entre EEUU y México: el experimento “Hold the Line” de 1993
West Berliners stand amid the rubble of WWII and watch U.S. Air Force transport planes land at Templehof Airport during the Berlin Airlift in 1948.
The Berlin Airlift
a group of male Mexican immigrants standing in a field
Operation Wetback: The Roots of Immigrant Deportations Today
women Labeling and packing Iletin brand insulin, 1924, National Museum of American History, CC BY-NC-ND 2.0 DEED
The First Insulin Injection for Diabetes
The Statue of Liberty during the June 10, 2021 solar eclipse.
Solar Eclipses in American History
horseshoe shape made up of people
From College Towns into Knowledge Towns: On the Future of Town/Gown Relations
U.S.S. Arizona on fire after the Bombing of Pearl Harbor
Why Did Japan Attack Pearl Harbor?
Rosetta Tharpe holding a guitar, Lucky Milliner and Moe Gayle in 1941
The Mother of Rock and Roll
people at the League of Nations assembly, 15 November 1920 at the Reformation Hall in Geneva, National Library of Norway
The Versailles Treaty Fight
Three 10th Mountain Division Ski troopers above Camp Hale in the Pando Valley, Colorado in February, 1944.
Skis, Samba, and Smoking Snakes: An Unlikely World War II Partnership
Count Gaston aboard his Jeantaud electric, 1899.
The Jeantaud Electric Car Land Speed Record
Joel Roberts Poinsett on a background of poinsettias.
Poinsettia Day, the Monroe Doctrine, and U.S.-Mexican Relations
The Beatles, upon their arrival at Kennedy International Airport in New York City on February 7,1964.
“I Want to Hold Your Hand”
Wrangell-St Elias Natl Park by CheWei Chang, Flickr, CC BY-ND 2.0
America’s National Parks: 10 Moments of Insight