8. One result of the mountainous geography of Greece was that -

A. foreign armies were unable to invade

B. volcanic eruptions constantly threatened city-states

C. Greek city-states had to get rid of all their food

D. city-states developed mostly independent of each other

D. city-states developed mostly independent of each other

The mountainous geography of Greece functioned as natural borders between different settlements. The early Greeks settled in the habitable land between the mountains, which later led to large city-states developing in those areas between the mountains. The mountains would act as borders between the various city-states of Greece.