What feature of Athens geography most effected its econamy?

The proximity to the sea was the feature of Athens' geography that most affected its economy. The city was located on a peninsula that jutted out into the Aegean Sea, and this allowed it to become a major trading center. Athens was able to import goods from all over the Mediterranean region and export its own products, such as olive oil and pottery. The city also benefited from its natural harbour, Piraeus, which was one of the best in the ancient world. This allowed Athens to become a major naval power and to control the sea lanes of the Aegean.

The proximity of Athens to the sea also had a significant impact on the city's culture. The Athenians were a seafaring people, and their culture was heavily influenced by the sea. This is reflected in the city's art and architecture, as well as in its literature and philosophy.