One thing was that Seas were sometimes difficult to navigate which limited communication - D. this was already a factor which limited the possibility of one united Greece emergin because it made it very difficult to talk to these isolated islands that couldbe found through the difficult-to-navigate seas.
Another thing was that C - some city-states were located on isolated islands.
The answer may be 1. It can’t be 2 or 4 because they corolate
They faced smallpox, low supplies, little to no food, and the bitter cold.<span />
C is the right answer because it's how you spell government