en_tn_lite_do_not_use/est/01/01.md

In the days of Xerxes

"In the time of Xerxes" or "When Xerxes was ruling as king"

this is Xerxes who reigned from India as far as Cush, over 127 provinces

This is background information to help the reader identify Xerxes. (See: rc://en/ta/man/jit/writing-background)

provinces

A province is a large area into which some countries are divided for the purposes of government.