Long ago, a great land was ruled by kings. 

Long ago, a leader named Ardashir started a new empire. 


The Sasanian Empire was a large land in ancient Iran. 
Ardashir's son was Shapur I. He was also a strong king. Shapur fought the Roman Empire. He even captured a Roman leader named Valerian. 
The empire had a big government. It used the Zoroastrian religion to help unite people. They made grand buildings and beautiful art. This art spread to far places like China and India. 
The Sasanian Empire was a huge and important land in ancient Iran. 
This empire grew through many battles and smart choices. Ardashir I started it by winning a big fight at Hormozdgan. 

Ardashir's son, Shapur I, continued to make the empire even larger. He led many campaigns to win new lands. 

Life in the empire was organized by a large government. 

Eventually, the empire faced many hard times and wars. A long war with the Byzantine Empire made the land weak. 

The Sasanian Empire, officially known as Eranshahr, was a powerful Iranian empire. It lasted for over four centuries, from 224 to 651 AD. The empire was ruled by the House of Sasan. This dynasty was the second longest in ancient Iran. It followed the Arsacid dynasty of Parthia. The Sasanians wanted to restore the legacy of the older Achaemenid Empire. They sought to expand and strengthen the Iranian nation.
The empire began through the rise of Ardashir I. He was the son of a ruler named Papak. Ardashir first became a governor in a region called Darabgerd. He eventually took control of the province of Pars. In 224 AD, Ardashir fought the Parthian king, Artabanus IV. This battle took place at Hormozdgan. Ardashir won the battle and defeated the Parthian ruler. This victory ended the Parthian Empire. Ardashir then took the title shahanshah, which means "King of Kings." 
After winning power, Ardashir expanded his territory quickly. He gained control over provinces like Kerman, Isfahan, and Susiana. He also moved his capital to a new city. This city was called Ardashir-Khwarrah, located near modern-day Firuzabad. The city was very safe because it sat near high mountains. It was protected by a high, circular wall. Ardashir's son, Shapur I, continued this growth. He conquered the Kushan Empire and parts of Bactria. Shapur I also led many military campaigns against the Roman Empire. 
Shapur I is famous for his victories over Rome. In 243 AD, he fought the Roman army at Edessa. During this conflict, Shapur captured the Roman emperor Valerian. The emperor remained a prisoner for the rest of his life. Shapur celebrated this victory with large rock reliefs. One famous relief is at Naqsh-e Rostam. 

The Sasanian government was very organized. They used a complex and centralized bureaucracy to rule. The empire also used Zoroastrianism to unify the people. This religion served as a legitimizing ideal for the rulers. However, religious policies changed over time. Shapur I was tolerant of many groups. Later, kings like Bahram I faced pressure from Zoroastrian priests. They were pressured to persecute followers of Manichaeism. Manichaeism was a religion that spread widely during this era. 
At its highest point, the empire was massive. It controlled all of modern-day Iran and Iraq. It also held parts of the Arabian Peninsula. This included Eastern Arabia and South Arabia. The empire reached into the Caucasus and the Levant. It even controlled parts of Central Asia and the Indian subcontinent. 
The empire eventually faced a period of decline. A devastating war occurred with the Byzantine Empire. This war weakened the Sasanian state. Following the rise of Islam in Arabia, the empire faced new challenges. The early Muslim conquests began under Muhammad. These conquests continued under the Rashidun Caliphate. The Sasanian Empire finally fell in 651 AD. This marked a major religious shift for the region. However, Sasanian culture did not disappear. Sasanian art, music, and philosophy were absorbed into Islamic culture. This helped keep Iranian knowledge alive in the growing Muslim world. 
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