How did the ancient Greeks get around?
Although I agree with the above answer, I feel compelled to add that in the ancient world the sea was of great importance in terms of travel. In fact it is one element of the ancient world that differs greatly form the modern. The sea, or rather water masses, were seen as connecting, rather than dividing. Travel over water was easier, faster, and cheaper than travel over land. This is especially true if they wished to transport goods etc.