The ruling techniques between the Achaemenids under Cyrus
and Darius with another civilization we've covered so far.

The ruling techniques between  the Achaemenids under Cyrus  and Darius with another civilization is discussed below in detail.

Explanation:

Cyrus was an army intelligence, while Darius was an authority intellectual he was very systematic and had administrators in every region and made large ways for interaction.

Darius was a member of the noble bodyguard of Cambyses II, the son, and successor of Cyrus the Great who governed for numerous years before dying mysteriously in 522. Later that same year, Darius took the kingship after executing an asserted usurper he declared had only represented to be Cambyses' brother Bardiya.

mass production/ assembly line production