Ancient Greece, situated in southeastern Europe, was a region of diverse landscapes and city-states that played a pivotal role in shaping Western civilization. The geographical features of Greece - characterized by its many mountains, numerous islands, and mild climate - greatly influenced the development of its economy, culture, and military.
Due to the numerous mountain ranges, the use of horses was rare. As a result, Greek militaries relied heavily on foot soldiers with heavy armor, which in turn greatly affected the development of Greek military tactics.
Quick travel was also difficult across Greece, making it difficult to manage and rule over large areas of land. Consequently, cities ruled themselves independently from each other.