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The Year That Forged the Roman Empire

Sack of Corinth, by Thomas Allom, 1872
Sack of Corinth, by Thomas Allom, 1872. Credit: Wikimedia Commons, public domain

The formation of the Roman Empire was a gradual process, unfolding over several centuries. Nevertheless, there is one specific year that we can point to as arguably the single most significant year in the formation of the Roman Empire. This was the year 146 BCE. How did the events of this year lead to the creation of the Roman Empire?

The gradual formation of the Roman Empire

In an administrative sense, the Roman Empire was founded in the year 27 BCE. This was when Octavian, the son of Julius Caesar, became the emperor. The Roman Senate recognized him as possessing overarching military power and designated him Augustus in recognition of his new position as emperor.

Octavian established reforms to the constitution, officially changing Rome into an empire. Hence, in 27 BCE, the Roman Empire came into existence. Before then, it had been a republic.

However, although it only became an empire in an administrative sense in 27 BCE, Rome already controlled a vast empire before that. In the basic sense of “a group of countries ruled by a single person, government, or country“, Rome was already an empire long before the days of Octavian.

The Roman Republic conquered most of the territory that would constitute the future Empire. Therefore, to understand how Rome became powerful, we need to examine that era.

The acquisition of territory was a gradual process that took several centuries. However, the year 146 BCE, arguably more than any other, was crucial in the formation of the Roman Empire.

The Battle of Corinth

In 146 BCE, two significant events occurred for the Romans. One of these was the Battle of Corinth, marking the culmination of the Achaean War, which lasted only a single year.

At that time, the Achaean League ruled over the Peloponnese. They had recently assimilated Sparta into the league, which troubled Rome. Both sides were concerned with the other’s expansionist tendencies. Rome had conquered Macedonia in the early part of the second century BCE and had reconquered it in 150-148 BCE.

In the final year of the war against Macedonia, the Achaean League took control of Sparta, solidifying their hold on the Peloponnese. With tensions high due to the actions of both sides, war broke out two years later, in 146 BCE.

The war did not last long. The Achaean League was woefully unprepared, both militarily and financially, for a full-scale war against Rome. The Romans quickly subdued the Greek cities, many of which took the initiative to surrender.

A Roman consul and military general named Lucius Mummius led the Romans in their siege of Corinth. This was the climax of the war. The Romans successfully defeated and utterly destroyed it. Their brutality was noted even by ancient historians. With this victory, the Romans gained direct control of all of Greece.

The Siege of Carthage

The same year, 146 BCE, also marked the climax of another war. The war in question was the Third Punic War. This was the third war between the Roman Republic and the Carthaginian Empire.

Carthage was located in modern-day Tunisia. Rome had already defeated them in the Second Punic War, which had ended in 201 BCE. One of the terms of the treaty was that Carthage was prohibited from engaging in war without Rome’s permission. This allowed Rome’s ally, Numidian king Masinissa, to repeatedly invade Carthage’s territory.

Carthage’s decision to fight back and send an army against Masinissa in 149 BCE provided the Romans with a justification for a third war against Carthage. In reality, Rome harbored animosity towards Carthage and was merely seeking an excuse to destroy it.

When the Roman army arrived, the Carthaginians offered a complete surrender. Nevertheless, the Romans persisted and besieged the city. Eventually, after considerable brutality and bloodshed, the Romans utterly destroyed their enemy.

Just like Corinth in that same year, Carthage was completely, mercilessly destroyed, and the Romans took over the territory.

How the year 146 BCE led to the creation of the Roman Empire

Given this information, 146 BCE can be regarded as vital in the creation of the Roman Empire. The Romans achieved two major victories this year: the defeat of the Achaean League and the defeat of Carthage.

Both of these victories significantly expanded the territory of the Roman Republic. Rome took over control of all of Greece and also the core territory of the Carthaginian Empire in Tunisia. Granted, this was only a tiny portion of what later became the territory of Rome’s vast empire.

However, the main impact that this year had on the formation of the Roman Empire was not the territory gained. Rather, it was the geopolitical consequences of these victories that mattered the most.

Carthage and the Achaean League were both major powers in the Mediterranean. With their defeat, Rome became the undisputed master of that part of the earth. While it still had numerous enemies to confront, it no longer had a single, major, powerful rival.

Over in Anatolia, Pergamon was friendly with Rome. Ptolemaic Egypt was also their ally, with Rome exerting considerable influence over that region. With Greece and Carthage out of their way, Rome’s position as the dominant force in the Mediterranean was firmly established. It is for that reason that we can consider 146 BCE as such a crucial year in the formation of the Roman Empire.

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How Roman Emperor Julian Fought Christianity to Save the Ancient Greek Gods

A full-length marble statue of a bearded man draped in a traditional Roman cloak and holding a scroll stands within a stone gallery.
The depiction of Julian in this classical guise shows his commitment to Neoplatonism and Greek culture over the rapidly spreading Christian faith. Credit: Ash Crow, Wikimedia Commons, CC BY-SA 4.0

Few figures in late antiquity present as compelling a historical debate as Julian the Apostate’s attempt to restore the Greek gods in opposition to Christianity in the Roman Empire.

During his brief but highly consequential reign in the fourth century AD, the Roman Empire stood at a profound religious crossroads. For a short period, Julian attempted to slow the empire’s accelerating Christianization, launching a sweeping effort to revive the ancient Olympian pantheon and return Rome to its traditional pagan practices. His sudden death on the battlefield has led historians to debate how dramatically the cultural trajectory of Western civilization might have shifted had his reforms endured.

Julian was born into the heart of the Constantinian dynasty, a family that had only recently converted to Christianity. Nonetheless, he became the last Roman emperor to openly support and worship the traditional Greek gods. He ruled for only about two years from 361 to 363 AD, but he acted with urgency and purpose. Julian the Apostate initiated an extensive program of philosophical and religious reform, aiming to reverse the Christian expansion advanced by his predecessors. To the growing Christian population, he was seen as a traitor to the new religious order, but to those who still admired the intellectual and cultural legacy of the classical world, he appeared as a philosopher-king attempting to restore an older vision of Rome.

A sculpted marble portrait head of a bearded man wearing a diadem rests upon a stone pedestal inside a museum.
This marble head from Athens is widely believed to be a rare surviving portrait of the Roman Emperor Julian the Apostate. Credit: George Koronaios, Wikimedia Commons, CC BY-SA 4.0

Julian the Apostate’s early life

Julian did not experience the typical sheltered upbringing of an imperial heir. He grew up constantly looking over his shoulder, surviving political purges that eliminated many members of his own family. Although he was raised in a strict Christian environment under the supervision of powerful bishops, he is often understood to have developed a private intellectual attraction to classical texts and traditions associated with the ancient world.

His life took a decisive turn when he went to study in Athens. There, he was secretly initiated into the Eleusinian Mysteries, an experience that deeply shaped his philosophical outlook and strengthened his commitment to rejecting Christianity in favor of Neoplatonism. This forced dual existence helped form a uniquely strategic mindset. He became familiar with the inner workings of the Church, knowledge he later leveraged in support of his own religious and philosophical aims. By the time his troops in Gaul unexpectedly proclaimed him emperor, Julian was convinced that the gods themselves had chosen him to restore the ancient order.

Julian the Apostate as Emperor and the worship of the Ancient Greek gods in the Roman Empire

When he finally took power, Julian did not launch the kind of widespread, violent persecutions often associated with earlier periods of religious conflict. Instead, he pursued a more calculated cultural strategy. His approach focused on weakening Christian influence within imperial institutions while strengthening traditional religious structures. Julian the Apostate reduced the privileges and state support enjoyed by Christian clergy and redirected resources and prestige toward the priesthood of the traditional Greco-Roman religion centered on the Greek gods.

In a particularly controversial move, he restricted Christians from teaching classical literature. His reasoning was that those who rejected the traditional religious framework of Homer and Hesiod should not profit from instructing it. At the same time, Julian sought to make traditional religion more socially competitive by encouraging pagan priests to adopt public charitable functions, including aid for the poor and the establishment of hospitals—areas in which Christianity had been especially successful in gaining support. He appears to have believed that traditional worship had declined not because of its inherent weakness but because its institutions had failed to match the organizational and charitable presence of Christianity.

In practice, many historians argue that this cultural and intellectual strategy posed a different kind of challenge to early Christianity than outright violence. While persecution could strengthen Christian identity through martyr narratives, Julian the Apostate’s policies instead aimed to limit the social structures that supported its continued expansion while restoring the worship of the Ancient Greek gods within the broader Greco-Roman religious tradition.

A weathered page from an illuminated manuscript features three stacked, colorful panels showing medieval figures in royal and religious garments amidst dramatic interactions.
This illuminated manuscript page depicts vivid scenes of Emperor Julian ordering the arrest of a Christian bishop and overseeing acts of persecution. Credit: Wikimedia Commons, Public Domain

Unfortunately for his beliefs, that grand vision of such a revived Greco-Roman empire came to an abrupt end in the arid regions of Persia. During a military campaign, Julian was struck in the side by a spear, cutting his reign tragically short. Ancient sources and later traditions continue to debate the circumstances of his death, with some attributing the blow to a Persian soldier and others speculating—without evidence—that it may have come from within his own ranks. The true origin remains uncertain.

A well-known tradition holds that, as he lay dying, Julian the Apostate is said to have declared, “Thou hast conquered, O Galilean,” acknowledging the perceived triumph of Christianity. Whether or not he actually spoke these words, his brief reign left a lasting imprint on Roman and Western history. His efforts to restore the Ancient Greek gods within the Roman world continue to be discussed by historians as a striking moment in the empire’s religious transformation. Even in modern Greek cultural memory, echoes of this tension can still be felt in the broader contrast between the rational legacy of ancient philosophy and the spiritual tradition of Orthodox Christianity.

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