The High priests
The Persian Empire.
From Libya to Central Europe - the same as the Persian Empire from whom he conquered/stole it.
The Greek city-states occupied by, or threatened by, expansion of the Persian Empire in the eastern Mediterranean littoral.
Helpful in what way, to whom? To himself and his family? His Persian people? The subject peoples of the empire? Please be explicit in your question so we can have a chance of answering it when we know what you want.
Mark wrote it primarily for gentile (non-Jews) Greek-speaking residents of the Roman Empire.
As far as I'm aware of, none. Persian's were very liberal civilised people. Especially Cyrus the Great whom liberated and protected the Jews from their Babylon captivity.
Jews pray to God.
A battle fought by Athens, with support by its ally Plataia, to repel a Persian expeditionary force sent to restore its ex-tyrant Hippias whom the Persians wanted to take over rulership of Athens again to stop them interfering within the Persian Empire by supporting revolutions by Greek cities within the empire.
Mexican empire for whom America was named?
Specify against whom, when.
It's the word
The Persian Empire comprised many people, some of whom at different times rebelled for different reasons. The Greek city-states in Asia Minor rebelled over losing independence, after being stirred up by a Greek tyrant appointed by the Persians who was in trouble with the Persian governor. There were rebellions in Central Asia, and in Egypt, usually stirred up by a local ruler trying to gain dominance and secession.