Persia is a formable nation in the Middle East, representing a restoration of the Persian Empire as it existed under the Achaemenid dynasty until the conquests of Alexander the Great and would historically be followed up by the Parthians and especially the Sassanids. Any country with a primary culture in the Persian culture group can attempt to restore the Persian Empire, with the surviving Persianized satraps such as Atropatene, Armenia, and Cappadocia particularly well situated to form it. As an tier 3 endgame tag, reforming Persia requires conquering all of the main cities of Mesopotamia and the Iranian Plateau under the last Persian Empire and grants claims to the entire Persian heartland from Assyria to Bactriana.
If Persia is restored by a nation with ruled by a member of the Achaemenid dynasty - found only as the rulers of the Greek city-state of Heraclea Pontica at the start of the game - they will instead directly restore the Achaemenid Empire, taking on the name, flag, and trappings of the empire of Cyrus the Great.
The days of Cyrus and Darius are long gone, but the Persian people remember the great empires built by their own. It is time to throw off the shackles of our foreign oppressors, and unite our people once again!
- Main article: Nation forming events
Forming Persia triggers a special event allowing the country to move its capital to either Babylon (918), Ekbatana (1595), Persepolis (4799), or Sousa (946), or retain the court at its current position. Each option gives a different one-time bonus - with the Sousa (946) option being distinct in that a significant amount of gold will also be paid to create new pops in the city.