Tiwanaku

Maya civilization

The Maya Long Count calendar tracks days in an unbroken count from a mythical starting point in 3114 BCE.

Ancient RomeRoma

Tang court records describe envoys from 'Fulin', their name for Constantinople, arriving in 643 CE with gifts of red glass and precious stones.

Tang dynasty唐

Tang census-takers counted roughly 53 million people in 754, and only around 17 million a decade later, after the An Lushan rebellion, a fall historians attribute partly to real deaths and displacement, and partly to a tax census that simply stopped functioning.

Moche culture

Moche potters modelled ceramic portrait vessels so lifelike that individual faces can be recognised across different vessels.

Carolingian EmpireImperium Francorum

Charlemagne's tomb and skeletal remains suggest he stood roughly 1.84 metres tall, unusually tall for his time.