What are the difficulties in traveling in ancient Greece? Five answers

Traveling in "Ancient Greece"? Then we can "cross", but the main difficulties are:

1. Land transportation is inconvenient and separated by mountains.

2. The language is blocked and the relevant translator cannot be found.

3. Foreigners could not enjoy civil rights in ancient Greece, especially in Athens.

4. Ancient Greece was composed of city-states. Each city-state was independent, which was not conducive to travel and transportation.

5. Due to the different conditions of each city-state, personal safety cannot be guaranteed.