Answer:
The conflict began after Athens and Eretria gave assistance to the Ionians in their rebellion against Persia and its ruler, Darius. Although Darius was able to secure the loyalty of many Greek city-states, both Sparta and Athens executed his ambassadors rather than give up independence.
Explanation:
Where are the answer choices? :O
Answer:
i would say A but i could be wrong.
Explanation:
so sorry if im wrong.
<span>Common cause because it is joint interest </span>