Answer:
Sparta put too much emphasis on military's while Athens invested in development of arts and science.
Step-by-step explanation:
Both of those city states have very opposing reputation. Athens were generally known as the best place in Greece if you want to pursue higher education . Sparta was generally known as the best place if you wanted to be strong warriors.
Because of this A lot of business owners from outside the Greece much prefer to be involved with trades with Athens compared to Sparta. This helped Athens accumulated a lot of wealth that led to the Golden Age.