The Persian conquest of Babylon in 539 BCE ended Mesopotamia's last native dynasty and brought the entire Fertile Crescent under Achaemenid control.
Key Facts
- Year of conquest
- 539 BCE
- Conquering leader
- Cyrus the Great
- Last Babylonian king
- Nabonidus
- Decisive battle
- Battle of Opis
- Nabonidus ascended throne
- 556 BCE
Location
Cause → Event → Consequence
The Neo-Babylonian Empire weakened under King Nabonidus, who delegated rule to his son Belshazzar. Belshazzar's poor governance alienated both the priesthood and the military, while the Achaemenid Persian Empire under Cyrus the Great had been expanding rapidly eastward and launched an offensive campaign against Babylonia around 540 BCE.
In late 539 BCE, the Persian army defeated Babylonian forces at the Battle of Opis, a decisive engagement that broke organized resistance. The Persians subsequently entered the city of Babylon without significant further opposition, bringing the Neo-Babylonian Empire to an end and capturing Nabonidus, the last native Mesopotamian king.
The fall of Babylon transferred control of Mesopotamia and the broader Fertile Crescent to the Achaemenid Persian Empire, ending millennia of successive native Mesopotamian dynasties. Cyrus the Great became ruler of one of the largest empires the ancient world had yet seen, and Babylonia was incorporated as a Persian satrapy.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Cyrus the Great.
Side B
1 belligerent
Nabonidus, Belshazzar.