The successive Persian kings from Cyrus to Darius until conquered by Alexander who turned it into an empire of his own..
by treating conquered people fairly.
treating everybody fairly
It provided internal and external security for its peoples, taxed them fairly, encouraged prosperity, and left local government in place, with provincial Persian governors to ensure effective goverrnance.
Maintaining good and fair government, providing internal and external security, and maintaining prosperity and taxing fairly.
The Greek world had a fairly uniform religion and set of gods. The Persian Empire, stretching from Egypt to central Asia, covered a wide variety of peoples and religions, and it was not the Persian policy to incite religious revolts when they were trying to establish a peaceful and prosperous empire.
By treating people decently and fairly.
Junipero Serra.
he did not think they were treating him fairly.
Treating everyone fairly, and possbility of learning new skills
Early Islamic empire of the poise caliphs treated non Muslims fairly .
Imperial Bureaucrats in Persian society ran the daily affairs of the empire. The imperial survival depended on them because they were very educated, and literate professionals. Their social status was fairly high ranking. They could be placed along side of clan leaders and honorable warriors.
He was trying to unify the peoples of the ex-Persian empire with merging his Macedonianand Greek army with the upper-classes of Persian society. This was however largely symbolic, as he also brought in Greek culture and established many cities after the Greek model to 'civilise' the Persians and other peoples within the empire. This was fairly successful for a time until the empire began to fall apart after his death. The Hellenisation of the succeeding kingdoms his successors set up was largely confined to a veneer of the urban upper classes.