How did the Peloponnesian War threaten democracy in Athens?

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The Peloponnesian War threatened Athenian democracy by straining the city’s civic institutions and political stability, creating an environment of suspicion and economic hardship that emboldened anti-democratic factions.12

The primary threats to democracy during the conflict included:

  • Oligarchic Coups: In 411 BCE, wartime pressures and military setbacks led to the overthrow of the democratic government by the Council of the Four Hundred, an extremist group that sought to restrict political participation. While this was later replaced by a more moderate regime and eventually restored to full democracy in 410 BCE, these events highlighted the fragility of the democratic process under stress.123
  • Intellectual Subversion: Some political leaders and activists, influenced by the teachings of Sophists, actively challenged democratic principles, advocating for an elitist "hoplite franchise" that would exclude the thētes (the poorest class of citizens) from voting or serving as jurors.2
  • Spartan-Imposed Tyranny: Following Athens' final defeat in 404 BCE, Sparta imposed an oligarchy known as the Thirty Tyrants. This regime conducted a brutal purge, killing approximately 1,500 residents and forcing many moderates into exile, representing the most severe collapse of democratic rule during the period.42