Roman Empire

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Empire rankRoman Empire
Roman Empire.png
Primary culture
Roman (Lost Cultures)

Capital province
Rome (118)

Feudal MonarchyGovernment monarchy.png

State religion

Technology group
WesternWestern technology group
Roman ideas
Traditions.png Traditions:
+5% Discipline
+1 Yearly legitimacy

National unrest.png Pax Romana

−1 National unrest

Diplomatic reputation.png Legacy of Rome

+2 Diplomatic reputation

Stability cost modifier.png S.P.Q.R.

−20% Stability cost modifier

Land force limit modifier.png The Roman Legions

+15% Land force limit modifier
+10% Infantry combat ability

Production efficiency.png Roman Architecture

+20% Production efficiency

National tax modifier.png Imperial Bureaucracy

+10% National tax modifier

Core-creation cost.png Imperium Sine Fine

−20% Core-creation cost

Idea bonus.png Ambition:

+33% National manpower modifier

Historically, the Roman Empire was the dominant power in Europe in the first few centuries AD. While the Western Roman Empire ceased to exist long before the era covered by Europa Universalis IV, the Eastern Roman Empire continued to survive as Flag of Byzantium Byzantium. Any Christian or Pagan nation other than the Holy Roman Empire or the Papal State can restore the Roman Empire by decision after re-conquering most of the historical Empire. The other way to play the Roman Empire is to restore the Roman Empire as Byzantium in Crusader Kings II and converting the save to EU4 using the Europa Universalis 4 Save Converter.


 Restore the Roman Empire

Not since the Romans in the second century has one empire commanded the entirety of the Mediterranean and beyond. If we claim this land, we can scoff at whatever pretenders may claim in Constantinople or the Holy Roman Empire and proclaim ourselves the true successors of Rome.

Potential requirements

The Roman Empire does not exist.
The country:

If the country is AI-controlled then it


The country:

Needed provinces to form the Roman Empire


The country:

  • changes to the   Roman Empire.
  • has all owned provinces of its   primary culture become Roman culture.
  • changes its primary culture to Roman.
  • becomes an   empire.
  • gains  50 prestige.
  • moves its capital to Roma (118).
  • gets a core on Roma (118).
    •  −0.05 monthly autonomy change,
    •  +1 national unrest.

All your owned provinces will cease to be part of the Holy Roman Empire.

The country removes all its provinces from the Holy Roman Empire.

If the country does not have custom ideas


Mare Nostrum
Country guides

Central African technology group     Mutapa
East African technology group     Kilwa
Muslim technology group     Mamluks  Tunis
West African technology group     Mali

Eastern technology group     Jerusalem
Muslim technology group     Arabia   Hisn Kayfa   Oman
Indian technology group     Assam   Bahmanis   Bengal   Orissa
Nomadic technology group     Jianzhou   Timurids   Uzbek

Western technology group     United States
Mesoamerican technology group     Maya
North American technology group     Caddo   Cherokee   Iroquois

Andean technology group     Cusco   Muisca
South American technology group     Mapuche