Did the ancient Persian civilization have a written language?

Answer 1

The language of the modern Persians is Farsi, with many dialects within Iran along with Afghanistan and Tajikistan. Sometimes other Iranian/Iranic languages of this region are included in this, such as Kurdish, Baluchi, and various other minority languages.

The language of the Persians which fought the Roman Empire, the Sassanids and Parthians, is Middle Persian. It is also referred to as Pahlavi, although this more properly refers to the writing system they used.

The language of the Persians which fought with the Ancient Greeks is Old Persian. It lasted until near the end of the Achaeminid empire at which time it began transitioning into Middle Persian.
The many local languages remained; the lingua franca was Aramaic.

Answer 2

At the beginning of the 5th Century BCE a lingua francewas adopted as a unifying factor for the wastern half of the Empire stretching from Libya to Persia: Aramaic

Answer 3

Yes, they did and it was called farsi

Answer 4

Akkadian, later going into Aramaic.

Answer 5

Persian (also called Farsi)