Roman Empire

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

Capital province
Rome (118)

Feudal Monarchy

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.


Execute decision.pngRestore 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 Flag of Roman Empire Roman Empire.
  • has all owned provinces of its Primary culture.png primary culture become Roman culture.
  • changes its primary culture to Roman.
  • becomes an Empire rank empire.
  • gains Prestige.png50 prestige.
  • moves its capital to Roma (118).
  • gets a core on Roma (118).
  • gets the modifier “Increased Centralization” for 20 years with the following effects:
    • Autonomy.png−0.05 monthly autonomy change,
    • National unrest.png+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 icon
Mare Nostrum
Restore the Roman Empire and own the entire Mediterranean and Black Sea coast lines.
Country guides

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East African technology group East African.png Kilwa.png Kilwa
Muslim technology group Muslim.png The Mamluks.png MamluksTunis.png Tunis
West African technology group West African.png Mali.png Mali Mossi.png Mossi

Eastern technology group Eastern.png Jerusalem.png Jerusalem
Muslim technology group Muslim.png Arabia.png Arabia Hejaz.png Hejaz Hisn Kayfa.png Hisn KayfaKhiva.png Khiva Mughals.png Mughals Oman.png Oman Persia.png Persia Shammar.png Shammar
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Western technology group Western.png United States.png United States
Mesoamerican technology group Mesoamerican.png Maya.png Maya
North American technology group North American.png Caddo.png Caddo Cherokee.png Cherokee Iroquois.png Iroquois

Andean technology group Andean.png Cusco.png Cusco Muisca.png Muisca
South American technology group South American.png Mapuche.png Mapuche