519 BCE

Zhou Jing Wang/Ji Gail becomes King of the Zhou Dynasty of China. Herodotus tells that Cleomenes happened to be in the vicinity of Plataia, when the Plataians requested an alliance with Sparta, which he rejected, but instead he advised them to ally with Athens, because he wanted to stir a border conflict between Thebes and Athens, two of the most powerful poleis of central Greece.

Geopolitics & Diplomacy

Zhou Jing Wang/Ji Gail becomes King of the Zhou Dynasty of China.source

Exploration & Expansion

Herodotus tells that Cleomenes happened to be in the vicinity of Plataia, when the Plataians requested an alliance with Sparta, which he rejected, but instead he advised them to ally with Athens, because he wanted to stir a border conflict between Thebes and Athens, two of the most powerful poleis of central Greece.source

Births

Xerxes I of Persia, fourth king of Persia (or 518 BC) (d. 465 BC)source
Cincinnatus, Roman aristocrat and statesman (d. 430 BC)source