Answer:
Similarity of Religion
One of the main similarities between Athens and Sparta was that they shared the same religion. It was a polytheistic religion that was shared by all the city-states of Ancient Greece. This religion contained many gods all lead by Zeus that all lived in a mystical realm on top of mount Olympus.
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Industrial development company improve . encouraging government support
        
             
        
        
        
Thomas Jefferson wrote the declaration of Independence