Final answer:
Ancient Greek civilization established the basis of western democracy through the concept of democracy and institutions like the Athenian assembly and the council of 500.
Step-by-step explanation:
The basis of western democracy was established by ancient Greek civilization. The ancient Greeks developed the concept of democracy, where citizens had the right to participate in decision-making. They introduced the practice of voting and created institutions such as the Athenian assembly and the council of 500. This system set the foundation for the democratic principles we see in modern western democracies today.
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