Achaemenid Empire
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The Achaemenid Empire or Achaemenian Empire, also known as the First Persian Empire, was the ancient Iranian empire founded by Cyrus the Great of the Achaemenid dynasty in 550 BC. Based in modern-day Iran, it was the largest empire by that point... Wikipedia
Capitals: Persepolis, Babylon, Susa, and more
Founded: 550 BC
Founder: Cyrus the Great
Government: Theocracy
Official Language: Old Persian
military conflict: Ionian Revolt, Battle of Eurymedon