system
Context: The Achaemenid Empire, also called the First Persian Empire, was an empire based in Western Asia, founded by Cyrus the Great. Ranging at its greatest extent from the Balkans and Eastern Europe proper in the west to the Indus Valley in the east, it was one of the largest empires in history, spanning 5.5 million square kilometers, and was larger than any previous empire in history. It is equally notable for its successful model of a centralised, bureaucratic administration (through satraps under the King of Kings), for building infrastructure such as road systems and a postal system, the use of an official language across its territories, and the development of civil services and a large professional army. The empire's successes inspired similar systems in later empires. It is noted in Western history as the antagonist of the Greek city-states during the Greco-Persian Wars and for the emancipation of the Jewish exiles in Babylon. 

By the 7th century BC, the Persians had settled in the southwestern portion of the Iranian Plateau in the region of Persis, which came to be their . From this region, Cyrus the Great advanced to defeat the Medes, Lydia, and the Neo-Babylonian Empire, establishing the Achaemenid Empire. Alexander the Great, an avid admirer of Cyrus the Great, conquered most of the empire by 330 BC. Upon his death, most of the empire's former territory came under the rule of the Ptolemaic Kingdom and Seleucid Empire, in addition to other minor territories which gained independence at that time. The Iranian population of the central plateau reclaimed power by the second century BC under the Parthian Empire.
human
What's another name for the First Persian Empire?
gpt
The Achaemenid Empire
human
Who founded it?
gpt
Cyrus the Great
human
By when had Persians settled in the southwestern portion of the Iranian plateau?
gpt
the 7th century BC
human
Who did Cyrus the Great defeat from there?
gpt
the Medes, Lydia, and the Neo-Babylonian Empire
human
Who did Alexander the Great admire?
gpt
Cyrus the Great
human
By when did Alexander conquer most of the empire?
gpt
by 330 BC
human
Was that empire one of the largest in history?
gpt
yes
human
What did it extend to in the east?
gpt
the Indus Valley
human
And in the west?
gpt
the Balkans and Eastern Europe
human
How many kilometers was it?
gpt
5.5 million square kilometers
human
What kind of administration is it notable for?
gpt
centralised and bureaucratic
human
Through what?
gpt
satraps under the King of Kings
human
Name one kind of infrastructure they built?
gpt
road systems
human
Can you name another?
gpt
a postal system
human
And yet another?
gpt
civil services
human
And one more?
gpt
a large professional army
human
Who was it the antagonist for?
gpt
the Greek city-states
human
Is it known for emancipation?
gpt
yes
human
Of whom?
gpt
the Jewish exiles in Babylon
human
Did its sucesses inspire later empires?
gpt
yes