c. 3rd century – c. 9th century★★★★★
Classic period of Maya civilization
Maya city-states such as Tikal, Palenque and Calakmul reach their height in architecture, writing, astronomy and calendrics.
CultureScience· Mexico, Guatemala, Honduras
Maya city-states such as Tikal, Palenque and Calakmul reach their height in architecture, writing, astronomy and calendrics.
In the desert of southern Peru, the Nazca and earlier cultures create enormous geoglyphs on the ground, best seen in full from above.
Teotihuacan in the Valley of Mexico grows into one of the largest cities in the world of its time, with the Pyramid of the Sun and the Avenue of the Dead.
After the fall of the Han, China splits into the states of Wei, Shu and Wu until reunification under the Jin in 280.
The Roman Empire nearly collapses under civil wars, invasions, plague and economic crisis until Diocletian's accession.