How National Geographic Conquered American Culture
The magazine’s explosive growth mirrored the nation's emergence as a global empire.
The Civil War Fight over Underage Soldiers
Families turned to habeas corpus to recover enlisted sons, forcing a constitutional showdown over military power.
The Invention of the Continental Divide
A Civil War–era push for unity helped transform a little-known geographic boundary into a powerful symbol of American identity.
Inside a Four-Million-Word Diary of 1860s New York
George Templeton Strong chronicles Civil War–era New York with unmatched immediacy, capturing daily life and upheaval.
The Revolutionary Beginnings of the Republican Party
Popular resistance to the Fugitive Slave Law and “Slave Power” helped forge a new electoral force.
How The West Was Photographed
Railroad photography helped sell an “empty” American West—carefully framing out the people already living there.
The Long History of High-Tech Border Policing
In the 1970s, sensors and computers turned the US–Mexico border into a testing ground for automated control.
Defying Slave Hunters in Boston’s Courts
A dramatic 1836 courtroom escape shows how Black women challenged slave hunters—and Boston’s elite.
When Profit Met Protest in Colonial New York
Economic self-interest shaped how New Yorkers responded to British taxes and imperial crackdowns.
Drought and Indigenous Migration in the American Midwest
In the seventeenth century, life at the prairie–forest edge was dynamic, unstable, and deeply shaped by climate.