What made inland travel and trade difficult in greeece?

Inland travel and trade in ancient Greece were challenging due to the region's mountainous terrain, which created natural barriers and limited the construction of roads. The steep hills and rugged landscapes made it difficult for large caravans to navigate, hampering trade routes between cities. Additionally, the lack of navigable rivers further complicated transportation, forcing traders to rely on more arduous overland journeys. These geographical constraints contributed to the fragmentation of Greek city-states and the development of localized economies.