The Seleucid satrap (governor) of Parthia, Andragoras, claimed independence in about 246 BCE following a previous successful secession by his neighbouring satrap in Bactria.
It didn't last however - soon after, a Parthian tribal chief called Arsaces invaded and took it over, founding the Parthian Empire.
Essay about newspapers against electronic media?
Persia's absorption of Media and then conquest of the Babylonian Empire.
Persia was a client state of Media. Persia took Media over and used the combined power to take over the Babylonian Empire.
After uniting Persia and Media, he conquered the Babylonian Empire.
The media DIDN'T turn against the war...it's just that pictures didn't lie.
Turkey was Media in biblical times. However, the principal locations of the Median Empire were in Iraq and Iran.
As part of establishing its empire, Persia, and ally Media, took over the Babylonian Empire, included in which was Assyria.
By first incorporating Media, then using the combined forces to take over the Babylonian Empire.
Persia, previously a subject state of Media, took over Media and this combined strength then progressively took over the Babylonian Empire, and expanded through the Middle East, Egypt and central Asia.
Persia, a province of the Median empire, absorbed Media and, with this combined strength, King Cyrus (the Great) set out to take over the Babylonian empire, absorbing it into his growing empire.)
They were subsidiary to Media and took it over, then used this combined power to create their empire.
After Persia absorbed Media in 550 BCE, the combination progressively expanded through the Middle East and established an empire.