Which city-state led the Greek world in trade?
Athens or Sparta

Athens

Explanation:

Trade was very significant to ancient Greece. Those city-states which had access to more resources and the good route became very economically powerful.

Athens was the lead in trade. It had a great position with wide access to the sea. They had strict policies on trade – food was not to be sold as the city had many people who needed to be fed. They would import food but not sell it. But they had enough goods to earn much profit - they sold mainly honey, silver, olive oil, wine, and pottery. The beautiful artistic pottery was found on the coasts of Africa thanks to this trade. Harbor of Athens, Pireus (still existing today), became therefore one of the main points for the trade-in Greece.

On the other hand, Sparta gained its power by military power and not economic advances. They did not rely on the trade even discouraging it. They wished to be self-sufficient and get the needed goods by conquering and armed invasions.

answer; primary source information;