Persian was ruled by kings with cyrus the great beginnings empire

Cyrus was unlike other kings, he was portaryed as a savior to the people.

When cyrus conquered land he freed slaves

Persia extened From Egypt to large parts of Asia

He had his kingdom split into provinces and were also ruled by satrap which were like govenors

Had the army known as Immortals, 10,000 of the bravest soldiers in the Empire of Pesia.

Hope this helps you

d is the correct answer