Source A: Overview of Athens and Sparta

'Ancient Athens was known for developing the earliest form of democracy, where citizens could participate in decision-making. Sparta, on the other hand, was governed by a mixed system of oligarchy, with power held by a small group of elites and a rigid social structure.' Provenance: Summary from a textbook on Ancient Greece.

Source B: Political Factors

'Political stability and control were crucial. Athens’ desire for citizen participation promoted democratic reforms, while Sparta’s need to maintain strict control over its society reinforced oligarchic rule.' Provenance: Extract from a history textbook on Greek political development.

Source C: Economic Influence

'Athens' economy based on trade and naval power encouraged openness and participation, while Sparta's economy relied on agriculture and forced labor, supporting a closed oligarchic system.' Provenance: Economic analysis from a history journal.

Source D: Religious Influence

'Religious festivals and beliefs played a role in uniting citizens in Athens, promoting shared values. In Sparta, religion supported the militaristic and disciplined society.' Provenance: Religious studies overview from a history textbook.

Based on the factors discussed, answer the following:

Question: Which factor was MORE significant in shaping Athens' democracy: Political, Economic, or Religious? Justify your choice with evidence.