Western Roman Empire

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IMPERIVM·ROMANVM·PARS·OCCIDENTALIS
Roman Empire, Western Part
Division of the Roman Empire
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395 (337)–476 →
 
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Labarum

Motto
Senatus Populusque Romanus
The Western Roman Empire in 395.
Capital Ravenna
(402–476)
Language(s) Latin
Religion Roman religion and later Christianity
Government Autocracy,
Tetrarchy
(293–313)
Emperor
 - 395–423 Honorius
 - 475–476 Romulus Augustulus
Consul
 - 395 Flavius Anicius Hermogenianus Olybrius, Flavius Anicius Probinus
 - 476 Basiliscus, Flavius Armatus
Legislature Roman Senate
Historical era Late Antiquity
 - Division of Diocletianus, Constantine, and Theoseaus 395 (337)
 - Deposition of Romulus Augustulus 476
Area
 - 395[1] 2,000,000 km² (772,204 sq mi)
Currency Follis for bronze, Siliqua for silver, Solidus for gold.

The Western Roman Empire was the western half of the Roman Empire, from its division by Diocletian in 285; the other half of the Roman Empire was the Eastern Roman Empire, today widely known as the Byzantine Empire.

The Western Empire existed intermittently in several periods between the 3rd century and 5th century, after Diocletian's Tetrarchy and the reunifications associated with Constantine the Great and Julian the Apostate (324–363). Theodosius I (379–395) was the last Roman Emperor who ruled over a unified Roman empire. After his death in 395, the Roman Empire was permanently divided. The Western Roman Empire ended officially with the abdication of Romulus Augustus under pressure of Odoacer on 4 September 476, and unofficially with the death of Julius Nepos in 480.

Despite a brief period of reconquest by its counterpart, the Eastern Roman Empire, the Western Roman Empire would not rise again. As the Western Roman Empire fell, a new era began in Western European history: the Middle Ages.

Background

As the Roman Republic expanded, it reached a point at which the central government in Rome could not effectively rule the distant provinces. Communications and transportation were especially problematic, given the vast extent of the Empire. News of invasion, revolt, natural disaster, or epidemic outbreak was carried by ship or mounted postal service, often requiring much time to reach Rome, and for Rome's orders to be realized in the province of origin. For this reason, provincial governors had de facto rule in the name of the Roman republic.

Prior to the establishment of the Empire, the territories of the Roman Republic had been divided among the Second Triumvirate, composed of Octavian, Mark Antony, and Marcus Aemilius Lepidus. Antony received the provinces in the East: Achaea, Macedonia and Epirus (roughly modern Greece), Bithynia, Pontus and Asia (roughly modern Turkey), Syria, Cyprus, and Cyrenaica. These lands had previously been conquered by Alexander the Great; thus, much of the aristocracy was of Greek origin. The whole region, especially the major cities, had been largely assimilated into Greek culture, Greek often serving as the lingua franca.

Octavian, on the other hand, obtained the Roman provinces of the West: Italia (modern Italy), Gaul (modern France), Gallia Belgica (parts of modern Belgium, the Netherlands and Luxembourg), and Hispania (modern Spain and Portugal). These lands also included Greek and Carthaginian colonies in the coastal areas, though Celtic tribes such as Gauls and Celtiberians were culturally dominant.

Lepidus received the minor province of Africa (roughly modern Tunisia). Octavian soon took Africa from Lepidus, while adding Sicilia (modern Sicily) to his holdings.

Upon the defeat of Mark Antony, a victorious Octavian controlled a united Roman Empire. While the Roman Empire featured many distinct cultures, all were often said to experience gradual Romanization. While the predominantly Greek culture of the East and the predominantly Latin culture of the West functioned effectively as an integrated whole, political and military developments would ultimately realign the Empire along those cultural and linguistic lines.

Rebellions, uprisings, and political developments

Minor rebellions and uprisings were fairly common events throughout the Empire. Conquered tribes or cities would revolt, and the legions would be detached to crush the rebellion. While this process was simple in peacetime, it could be considerably more complicated in wartime, as for example in the Great Jewish Revolt.

In a full-blown military campaign, the legions, under generals such as Vespasian, were far more numerous. To ensure a commander's loyalty, a pragmatic emperor might hold some members of the general's family hostage. To this end, Nero effectively held Domitian and Quintus Petillius Cerialis, governor of Ostia, who were respectively the younger son and brother-in-law of Vespasian. The rule of Nero ended only with the revolt of the Praetorian Guard, who had been bribed in the name of Galba. The Praetorian Guard, a figurative "sword of Damocles", were often perceived as being of dubious loyalty. Following their example, the legions at the borders increasingly participated in the civil wars.

The main enemy in the West was arguably the Germanic tribes behind the rivers Rhine and Danube. Augustus had tried to conquer them but ultimately pulled back after the Teutoburg reversal.

The Parthian Empire, in the East, on the other hand, was too remote and powerful to be conquered. Any Parthian invasion was confronted and usually defeated, and the Parthians similarly repelled any Roman invasion, creating a stalemate situation.

Controlling the western border of Rome was reasonably easy, because it was relatively near, but controlling both frontiers at the same time during wartime was difficult. If the emperor was near the border in the East, chances were high that an ambitious general would rebel in the West and vice-versa. This wartime opportunism plagued many ruling emperors, and indeed paved the road to power for several future emperors.

Economic stagnation in the West

Rome and the Italian peninsula began to experience an economic slowdown as industries and money began to move outward. By the beginning of the 2nd century AD, the economic stagnation of Italia was seen in the provincial-born Emperors, such as Trajan and Hadrian. Economic problems increased in strength and frequency.

Crisis of the 3rd century

Starting on 18 March 235, with the assassination of the Emperor Alexander Severus, the Roman Empire sank into a 50-year civil war, known today as the Crisis of the Third Century. The rise of the bellicose Sassanid dynasty in Parthia posed a major threat to Rome in the east. Demonstrating the increased danger, Emperor Valerian was captured by Shapur I in 259. His eldest son and heir-apparent, Gallienus, succeeded and took up the fight on the eastern frontier. Gallienus' son, Saloninus, and the Praetorian Prefect Silvanus were residing in Colonia Agrippina (modern Cologne) to solidify the loyalty of the local legions. Nevertheless, Marcus Cassianius Latinius Postumus, the local governor of the German provinces, rebelled; his assault on Colonia Agrippina (Cologne) resulted in the deaths of Saloninus and the prefect. In the confusion that followed, an independent state known as the Gallic Empire emerged.

Its capital was Augusta Treverorum (modern Trier), and it quickly expanded its control over the German and Gaulish provinces and over all of Hispania and Britannia. It had its own senate, and a partial list of its consuls still survives. It maintained Roman religion, language, and culture, and was far more concerned with fighting the Germanic tribes than other Romans. However, in the reign of Claudius Gothicus (268 to 270), large expanses of the Gallic Empire were restored to Roman rule.