What effect did persia have on greece?
a. persia kept the city-states united. economy.
b. persia was an important military strong-hold for greece.
c. persians trade was important to the greek
d. persia prevented sparta and athens from uniting.

d. Persia prevented Sparta and Athens from uniting.

The Persian conflicts were influenced the Greek city-states because they formed under the administration of Athens and were to nevermore again penetrate the Persian Armies.

One significant cause that classical Greece was controlled by small city-states and autonomous towns, rather than by one all-powerful leader. An ultimate purpose following the advancement of city-states was the Greek nobility, who worked to block any perpetual governments from working.

explanation:

japan participated in world war i from 1914 to 1918 in an alliance with entente powers and played an important role in securing the sea lanes in the west pacific and indian oceans against the imperial german navy as the member of the allies.

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

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