Greek City-States · World History

What primary reason led to the outbreak of the Great Peloponnesian War in 431 BCE?

  1. A religious dispute over control of the sanctuary at Delphi and its oracle
  2. Fear among Sparta and its allies over the rising power of Athens
  3. A direct invasion of mainland Greece launched by the Persian king Xerxes II
  4. The assassination of the Spartan king Archidamus during peace talks
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Correct answer: Fear among Sparta and its allies over the rising power of Athens

As Thucydides famously noted, the growth of the Athenian Empire and the alarm it inspired in Sparta made war inevitable. Tensions between the Delian League and the Peloponnesian League culminated in a 27-year conflict that reshaped Greece.

Difficulty: Medium Question 17 of 20

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