358 BC

Year 358 BC: a year of shifting power in the eastern Mediterranean and Near East — marked by dynastic change in Persia and continued Macedonian expansion during the pre-Julian Roman calendar era.

358 BC is a year counted in the ancient pre-Julian Roman calendar and sits within the later part of the Classical period. Contemporary chronologies in different regions use distinct systems, but modern historians group events of this year under the single convention "358 BC" to compare developments across the Mediterranean, the Near East and beyond. The year is notable for political changes and military consolidation rather than one single defining battle.

Overview of major developments

Across several states and regions there was active state-building and conflict. The Macedonian kingdom under Philip II strengthened its position on its borders and pursued campaigns against neighboring peoples. In Persia a succession altered the imperial center, affecting policy and attitudes toward the Greek world. Meanwhile, the Roman Republic continued its gradual expansion on the Italian peninsula, engaged in local wars and alliances that set the stage for later dominance.

Regional highlights

Macedon: Philip II consolidated gains from earlier years, reorganizing forces and pressing against neighbouring tribes and cities to secure resources and strategic positions.
Persian Empire: Artaxerxes III came to the throne, succeeding his predecessor and beginning a reign that would seek to restore central authority across the Achaemenid domains.
Roman peninsula: City-states and the Roman Republic were involved in ongoing local conflicts and treaties, working within the pre-Julian calendar framework then in use (pre-Julian Roman calendar).
Wider Greek world: City-states reacted to Macedonian expansion with shifting alliances; the balance of power in mainland Greece continued to evolve after the upheavals of the previous decades.

Significance and later perspective

While 358 BC has no single universally celebrated event, it belongs to a period of transition: Macedon was rising toward hegemony in Greece, Persia experimented with renewed centralization under a new ruler, and republican Rome was increasingly active in regional affairs. These trends contributed to the larger transformations of the fourth century BC that reshaped the Mediterranean and Near Eastern political map.

Ancient sources and later historians assemble these developments from fragments, inscriptions and chronologies; modern narratives therefore place 358 BC within broader continuities of military reform, dynastic succession and regional diplomacy rather than treating it as an isolated turning point.