darius used some of persian's great wealth to build roads across the empire
Imperial
The language spoken in the Persian empires was Old Persian. It was the administrative language of the Achaemenid Empire and the Persian language used in official inscriptions and documents. Later, under the Sassanian Empire, Middle Persian became the dominant language.
Satraps.
The language of the Mughal Empire, and therefore of the Mughal Court was Persian and Chagatai initially. Later Urdu was also used.
Persian Jews or Iranian Jews are Jews historically associated with the Persian Empire or Iran. Today the term Iranian Jews is mostly used to refer to Jews from the country of Iran, but in various scholarly and historical texts, the term is used to refer to Jews who speak various Iranian languages.
Iran, Iraq, Turkey, Syria, Isreal, Jordan, Lebanon and many other countries control land that used to be the Persian Empire.
First the Assyrian, then copied by the Babylonian, then the Persian.
After - Athens converted the anti-Persian Delian League which it led against the Persian Empire into an empire of their own, and used the proceeds on itself, bankrolling its Golden Age.
The term Persian Empire is loosely used to cover several periods. The real empire of the Persians was 550-321 BCE. Other peoples took over Persia, starting with Alexander the Great.
The country referred to as the bear in the Bible is typically understood to be ancient Persia. This association is based on interpretations of a prophecy in the Book of Daniel, where a bear is used symbolically to represent the Persian Empire.
They turned the alliance of cities against the Persian Empire into an empire of their own and used the financial contributions of the cities to beautify Athens and keep half its population on the public payroll.