Aztec Kings Had Rules for Plagues, Including ‘Do Not Be a Fool’

But When Cortés’s Soldiers Arrived Carrying a Novel Virus, the Empire First Succumbed to Smallpox and Then Fell to Spain

Every civilization eventually faces a crisis that forces it to adapt or be destroyed. Few adapt.

On July 10, 1520, Aztec forces vanquished the Spanish conquistador Hernán Cortés and his men, driving them from Tenochtitlan, capital of the Aztec empire. The Spanish soldiers were wounded and killed as they fled, trying in vain to drag stolen gold and jewels with them.

The Spanish more than deserved the routing they got, and the conflict should have ended then. But a fateful surprise made those losses insignificant. By September, an unexpected ally of …

TKTKTK | Zocalo Public Square • Arizona State University • Smithsonian

The Border Should Inspire Us, Not Scare Us

Communities Along the U.S.-Mexico Border Point the Way to a Bicultural, Bilingual, and Binational Future

The U.S.-Mexico border offers an enduring example of binational, bicultural, and bilingual living that could be a positive model for the future—if Americans and Mexicans are willing to look beyond …

‘When the Baby Has Colic I Talk With the Grandmother’ | Zocalo Public Square • Arizona State University • Smithsonian

‘When the Baby Has Colic I Talk With the Grandmother’

As a Mexico-Trained Doctor in San Diego, Brenda Green Gets the Whole Family Involved

I practice family medicine at a clinic just a few miles away from the Tijuana medical school where I earned my medical degree. But the journey from medical school to …

The 1929 Law That Turned Undocumented Entry Into a Crime

By Treating Migrants as Felons, the Undesirable Aliens Act Reinforced a Punitive Approach to Unauthorized Immigration

Too often, discussions of modern immigration policy are ahistorical, focusing on recent events while ignoring the past policies that led us, as a country, to where we are today.

That’s especially …