What role did Greek geography play in the Persian Wars?

Explanation:

Success was dependent on sea power

- for the Persians to threaten the Greek city-states and force

them to keep their armies at home to defend their cities, and to be

able to supply their army from Asia Minor by sea.

- for the Greeks to get rid of the sea threat and be able to

concentrate their armies for a decisive land battle.

the option which was not a function of missionaries in the northwest was the first one - they established posts for trading furs and other goods.

missionaries were sent around the world to spread religion and their knowledge and others - they were not merchants who sold furs and other goods.

this is a good question! i'll do some research and come back when i have the answer!