Born of an old family in Ionia, Hecataeus of Miletus (hehk-uh-TEE-uhs), the son of Hegesander, built an atlas based on Anaximander’s map of the world using poetry, mythology, and his own investigations of Greek and Persian trade routes. This work contained mountains, seas, cities, roads, rivers, gods, Greeks, aborigines, Egypt, economies, etymologies, kings, customs, priests, and peoples. As a prominent member of Miletus’s insurgent political faction and a foremost proponent of sea power, he advised Histiaeus of Miletus’s rebel kinsman Aristagoras during the disastrous Ionian Revolt of 499-494 b.c.e. After the war, Hecataeus served as emissary to the victorious Persians. Later, he wrote of the revolt and the Persian Empire, including the military.