The new kids on the block. Who were they? Where did they come from?
Detail from a full-length bronze statue of a Parthian prince, Tehran Museum (photo AMW)
During the second millennium BC (between 2000 and 1000 BC) groups of animal-herders had moved down from the steppes of central Asia, and established themselves on the Iranian plateau. They became the Medes and the Persians. But plenty of Iranian peoples stayed on the steppes - becoming expert horsemen, and perfecting a nomadic lifestyle. The Greeks ignorantly referred to all these peoples as "Scythians" - there were many different nations, but they all spoke Iranian languages related to Persian. During the Seleucid period, around 250 BC, another movement began. One of the nomadic horse-riding nations began filtering down into the area east of the Caspian Sea. These were the Parni or Aparni, a branch of the semi-nomadic Dahae people. Deterred from taking on the powerful Bactrian kingdom, they infiltrated the satrapy known to the Greeks as Parthia, and so became known as Parthians.
Independence and expansion
In 247 BC Unrest in Bactria further east inspired the Seleucid satrap of Parthia, Andragoras, to break free of the central government. This gave the Parthians themselves the idea of breaking free from Andragoras. A group of seven conspirators murdered Andragoras, and proclaimed one of their number, Arshak (Arsaces), as king of Parthia. Holy fire, kept burning for ever, was used at his coronation: the religion of Ahura Mazda perhaps symbolised his intention to revive past glories. Unlike in Bactria, this was a "nationalist" uprising: an Iranian people taking power for themselves. He and his brother Tirdad (Tiridates - who became Arsaces II), quickly extinguished Greek rule in Parthia. The reconquest had begun.
A Roman historian wrote:
Arsaces became as memorable among the Parthians as Cyrus among the Persians, Alexander among the Greeks or Romulus among the Romans.
Soon they began expanding further westward into Seleucid territory. Their progress was checked by Antiochus III in 209 BC, but his defeat by the Romans at Thermopylae (again.) in 191 BC ended his briefly successful attempt to revive Seleucid dominance.
Under king Farhad I (Phraates I, 176 - ?171 BC), the Parthians extended their rule into Hyrcania, a base to attack the Persian heartlands from. The capital moved west to the Seleucid city of Hecatompylos in Hyrcania- the policy was to make use of the Greeks and what they'd built, not to eliminate them.
Mehrdad I (Mithridates I), who ruled from ?171 to 138 BC, did just that. He first did a deal with independent Bactria, securing his rear. He then turned west. He took Ecbatana in 147 BC. Advancing into Mesopotamia, he took Babylon in 141 BC and finally the Seleucid capital - Seleuceia - in 139 BC. It was simple now to mop up Media, Elymais and Persis. He's referred to as "King of Kings" in a Babylonian document. But he still called himself "Greek-lover" on his coins (and so did his successors) - no doubt to reassure the many Greeks in the cities who were now his subjects.
During the reign of Farhad II (Phraates II, 138 - 127 BC) the Seleucids had one last try at beating back the Parthians. Temporary success was totally wiped out by Farhad II's victory at the Battle of Ecbatana (129 BC). The Seleucid army was annihilated, marking the end of their 150 year rule in Persia. Many of these Greeks were taken prisoner, and recruited into the Parthian army.
Trouble with the Saka
But he couldn't take Syria and finish the Seleucids off, because of events in the east. The Yuezhi, an Iranian tribe living in Mongolia, were under pressure, because of the expansion of a mysterious people called the Xiongnu. They threatened the Yuezhi, the Yuezhi threatened the Saka, and the Saka threatened Parthia. Farhad II' s brilliant idea of using the Saka to fight the Seleucids misfired - feeling they'd not been rewarded for their service, they went on a spree of destruction through the new Parthian domains. Meanwhile other Saka overwhelmed the Bactrian kingdom. Farhad II took them on, but lost, and was killed. The newly-enrolled Greek hoplites had preferred to join the Saka; unsurprisingly the Parthians decided they could fight better without Greeks in future. The next Arsacid, Ardvan I (Artabanus, 127 - 124 BC) spent his reign fighting the Saka, and was also killed in battle.
Mehrdad II (a long and important reign 123 - 88 BC).
In Mehrdad II (Mithridates II) the Arsacids produced a great leader. First he neutralised the Saka problem by giving them somewhere to settle, out of the way in south-east Iran: modern Seistan (=Saka-stan), which had been recovered from the now defunct Indian Maurya empire.
After consolidating Parthian control of their earlier winnings, Mehrdad II was crowned King of Kings - and now felt himself the true successor to the Achaemenids. The Parthians had an empire of their own. Mehrdad even felt entitled to record his achievements, like Darius the Great, on a rock-face at Bisitun, just below the original. Persian became the official language instead of Greek, and the old Zoroastrian religion began a revival. The Parthian centre began a move westward again, into Mesopotamia - the Euphrates became the western frontier, and a new capital city was built at Ctesiphon, on the opposite bank of the Tigris to Seleuceia. Armenia (never properly part of the Seleucid empire) became Parthian by 95 BC.
The Chinese emperor Wu
First contact with China
Mehrdad welcomed Zhang Qian (Chiang-k'ien), ambassador from the Han emperor Wu (aka Han Wudi), who ruled from141 to 87 BC. Zhang Qian opened up the caravan route between China and the west which became known as the "Silk Road". The most important 1500 mile stretch through central Asia was controlled by the Sogdians, an Iranian people with their capital at Maracanda (Samarkhand).
First contact with Rome
Mehrdad's capture of Dura Europus, a major Seleucid city in Syria had an ominous consequence. A first meeting took place between the future deadly enemies. Present were the Parthian representative Orobazes and the Roman governor of Cilicia (around 92 BC) - Lucius Cornelius Sulla. Both perhaps had a common interest then in fears (justified.) about the intentions of Mithridates VI of Pontus. Initial contact was friendly and non-confrontational. A treaty was concluded, possibly recognising the Euphrates as a common frontier.
With contacts established with both Rome and China, the Parthian empire was now a force to be reckoned with. They controlled and profited hugely from the new trade route between east and west.