Answer:
if you're talking about the greek city-states, here ya go :)
Step-by-step explanation:
greek city-states likely developed because of the physical geography of the mediterranean region. the landscape features rocky, mountainous land and many islands. these physical barriers caused population centers to be relatively isolated from each other. the sea was often the easiest way to move from place to place.
so, with that being said, i would assume water-crafts such as ships or smaller boats.