The Founding of Tenochtitlan

1325 CE — Mesoamerica, Aztec (Mexica)

Today: Mexico City, Mexico (built atop the Aztec capital)

Following a prophecy — an eagle perched on a cactus, devouring a snake — the wandering Mexica built their capital, Tenochtitlan, on an island in a lake and grew it into one of the largest, most spectacular cities on Earth, laced with causeways and floating gardens. From it they forged an empire that dominated Mesoamerica through tribute and ritual warfare. It followed the same path as the earliest states: a people binding a region together around a capital, a faith, and a god-backed elite.

Worth knowing: Tenochtitlan may have held over 200,000 people — larger than any city in Europe at the time — and the eagle-and-serpent vision that founded it still sits at the center of the Mexican flag today.

Pattern: State formation & institutional founding — A durable new order — a state, an institution, a system of rule — is deliberately built and consolidated, outlasting the people who founded it.

Entry 134 of 240 in Precedent, a walk through the whole human story in order.