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Greek City-States - National Geographic Society
What Were the City States of Ancient Greece? - TheCollector
List of cities and towns in Greece - Wikipedia
A Journey Through the City-States of Ancient Greece - Worldhistory
Ancient Greek City States: The Top 7 and Their Significance - Histicle
Greek Cities | Greek City States, Capital Of Greece | Greece.com
Ancient Greek civilization - Sparta, Athens, City-States
Khan Academy
Ancient Greek City-States: A Comprehensive Summary
Polis - Ancient Greek City-States - ThoughtCo