Pacorus II, born in the year fifty, ascended to the throne as the King of Kings of the Parthian Empire in seventy-eight, following the reign of his father, Vologases I. Initially, he co-ruled with his father during the latter years of Vologases I's reign, but upon his father's death, Pacorus faced immediate challenges to his authority.
His reign was marked by internal strife, as his brother Vologases II revolted shortly after he became the sole ruler. This conflict persisted until the year eighty, when Vologases II was ultimately defeated. Pacorus also contended with another rival, Artabanus III, who emerged as a significant threat in seventy-nine or eighty, but by eighty-one, Pacorus had successfully vanquished him.
In the year one hundred nine, a new contender, Osroes I, appeared, further complicating Pacorus' rule. He continued the policies of the esteemed former king Artabanus II, focusing on enhancing the economic foundations of the Parthian Empire. This included the establishment of a new trade system and fostering diplomatic relations with powerful entities, notably Han China.
Under Pacorus' leadership, the Parthian influence expanded into eastern territories such as Khwarazm, Bactria, and the Hindu Kush. His reign also saw a notable shift in coinage, with the image of the Greek goddess Tyche becoming more prevalent, particularly on coins minted in Ecbatana, symbolizing a blend of cultural influences.
Pacorus II's legacy continued through his son, Vologases III, who inherited the ongoing struggle for the Parthian crown against Osroes I, ensuring that the challenges of leadership persisted beyond his reign.