Who managed villages under the Mauryan administration?

Read the following excerpt and answer the questions that follow:

"The Arthashastra is the first South Asian text which offers a theory of the State as being composed of seven constituent elements."

(Source: https://egyankosh.ac.in/bitstream/123456789/64794/1/Unit16.pdf)

(a) Who wrote the Arthashastra, and why is it considered important for the study of the Mauryan period?

(b) Mention two subjects covered in the Arthashastra.

What territories did Chandragupta gain after defeating Seleucus?

What was the role of Dhamma Mahamatras in Ashoka's administration?