The geography of greece led to the growth of independent political units, almost like countries, which are known as a- mercenaries
b- city states
c- empires
d- oracles

Correct answer is b- city states .

Explanation:

B is the correct answer because city states were independent political entities that had different forms of government, internal organization, but were also connected with language, culture, beliefs..

A is not correct as mercenaries are soldiers who are payed to fight.

C is not correct as empires are a large political unified entities that are stretching across larger territory.

D is not correct as places were prophecies were foretold.

the correct answer is a