Roman Empire

Roman Empire Senatus Populusque Romanus (Latin) Imperium Romanum  (Latin) Βασιλεία Ῥωμαίων  (Ancient Greek) Basileía Rhōmaíōn
← 30px 27 BC – 395 AD 395 – 476/480 (Western) 395 – 1453 (Eastern) 30px →   30px Eastern Roman Empire|→
Aureus of Augustus Vexillum
The Roman Empire in AD 117, at its greatest extent at the time of Trajan's death (with its vassals in pink).
Capital		Rome (27 BC–330 AD) Mediolanum (286–402, Western) Ravenna (402–476, Western) Nicomedia (286–330, Eastern) Constantinople (330–1453, Eastern)
Languages		Latin (official until 610) Greek (official after 610) Regional / local languages
Religion		Imperial cult-driven polytheism (Before AD 380) Nicene Christianity (State Church of the Roman Empire) (From AD 380)
Government		Semi-elective, functionally absolute monarchy
Emperor
-	27 BC  – AD 14	Augustus (first)
-	98–117	Trajan
-	284–305	Diocletian
-	306–337	Constantine I
-	379–395	Theodosius I
-	474–480	Julius Nepos
-	475–476	Romulus Augustus
-	527–565	Justinian I
-	780–797	Constantine VI
Legislature		Senate
Historical era		Classical era to Late Middle Ages
-	Final War of the Roman Republic	32–30 BC
-	Empire established	30–2 BC
-	Constantinople becomes capital	11 May 330
-	Final East-West divide	17 Jan 395
-	Fall of the Western Roman Empire	4 Sep 476
-	Murder of Emperor Julius Nepos	25 Apr 480
-	Fourth Crusade	12 Apr 1204
-	Reconquest of Constantinople	25 Jul 1261
-	Fall of Constantinople	29 May 1453
-	Fall of Trebizond	15 August 1461
Area
		5,000,000 km² (1,930,511 sq mi)
-	AD 390	4,400,000 km² (1,698,849 sq mi)
Currency		Sestertius, Aureus, Solidus, Nomisma