Shapur II

Shapur II was the tenth King of Kings, or Shahanshah, of the Sasanian Empire.

He ruled from 309 to 379 CE. This made him the longest-reigning monarch in Sasanian history. He was the son of Hormizd II. His reign is often called a golden era. This era saw the empire grow much stronger and expand its territory. Shapur II is remembered alongside other great kings like Shapur I and Khosrow I.

Shapur's path to the throne was unusual. When Hormizd II died in 309, his son Adur Narseh took over. However, Adur Narseh's reign lasted only a few months before he was killed by nobles. The nobility then blinded one of Hormizd's other sons. They imprisoned a third son named Hormizd. The throne was then reserved for the infant Shapur II. Some sources suggest Shapur was born forty days after his father died. A famous legend claims he was crowned while still in his mother's womb. Modern historians like C. E. Bosworth believe this story is fictional. The nobility used his infancy to gain more control over the empire. Shapur finally reached maturity and took full control in 325 at age sixteen.

At age sixteen, Shapur launched major military campaigns against Arab tribes. These nomads had been raiding the Sasanian homeland of Pars. Shapur campaigned against the Iyad tribe in Asoristan. He then crossed the Persian Gulf to reach al-Khatt in modern Saudi Arabia. He also attacked the Banu Tamim in the Hajar Mountains.

To prevent future raids, Shapur ordered the construction of a wall near al-Hira. This became known as the "wall of the Arabs." He also deported several tribes to different regions to maintain order. These included the Taghlib, the Banu Abdul Qays, and the Banu Bakr. These actions helped secure Eastern Arabia for the Sasanian Empire. This security allowed Zoroastrianism to spread into the region.

Shapur II also engaged in long wars with the Roman Empire. His main goal was to undo the Peace of Nisibis. That treaty had been signed in 298 by his grandfather, Narseh. The treaty had given the Romans several provinces in Mesopotamia. It also gave them control over Iberia and Armenia. Shapur wanted these lands back for the Sasanian Empire. Another cause for war was Roman interference in Sasanian politics. The Romans had supported Shapur's brother, Hormizd, at the Roman court. Additionally, the Roman Emperor Constantine the Great made Christianity the official religion. This created tension because Shapur enforced Zoroastrianism.

One major conflict involved the Roman Emperor Julian. Julian wanted to avenge Roman losses in the east. In 363, he led a large army toward the Sasanian capital, Ctesiphon.

Although Julian won a battle at Ctesiphon, he could not capture the city. He was killed during a skirmish while retreating. His successor, Jovian, had to sign a peace treaty with Shapur. This treaty was very beneficial for the Sasanians. The Romans gave up districts beyond the Tigris River. They also ceded the cities of Nisibis and Singara.

Armenia and Georgia also came under Sasanian influence.

Religion played a central role in Shapur's administration. He oversaw the completion of the Avesta. The Avesta contains the sacred texts of Zoroastrianism. Shapur also enforced strict religious policies. He punished heresy and apostasy within the empire. In Armenia, he built fire temples to promote Zoroastrianism.

He also persecuted local Christians in that region. These actions were partly a reaction to the Christianization of the Roman Empire. Shapur used religion to help unify his growing empire.

By the time Shapur II died at age 70, the Sasanian Empire was extremely powerful. He had pacified enemies to the east and controlled Armenia. His military successes changed the borders of the ancient world. His reign demonstrated how a single leader could reshape a massive empire through war and law. The strength he built lasted through his era. However, his three direct successors were not as successful as he was. Shapur's life remains a key part of Sasanian history.