How civilizations end

Gradual absorption

4 civilizations in this dataset ended primarily this way — separated by as much as 13,973 years and thousands of miles, yet sharing the same underlying cause of collapse.

14,000 BCE 27 BCE

Vedic Civilization

1,500 BCE–500 BCE

Classical Athens

508 BCE–322 BCE

Jomon Culture

14,000 BCE–300 BCE

Etruscan Civilization

900 BCE–27 BCE

Vedic Civilization

Northern Indian subcontinent · 1,500 BCE – 500 BCE

Gradually transformed into the urbanized kingdoms of the later Iron Age rather than collapsing outright.

Classical Athens

Attica, Greece · 508 BCE – 322 BCE

Independence ended with Macedonian, then Roman, domination, though the city endured.

Jomon Culture

Japanese archipelago · 14,000 BCE – 300 BCE

Transitioned gradually into the rice-farming Yayoi culture as new migrants and techniques arrived.

Etruscan Civilization

Central Italy · 900 BCE – 27 BCE

Gradually absorbed through Roman conquest and cultural assimilation rather than sudden collapse.