General
Population: Perhaps 100 million*
- Births: Themistocles the Athenian statesman (525 BC),
Aeschylus the Greek dramatist (525 BC)
- Religion: Buddha preaches first sermon in city of Benares (521 BC)
- Deaths: Cyrus of Persia (529 BC),
Peisistratus the usurper of Athenian government (527 BC)
Amasis II of Egypt (526 BC),
Cambyses II of Persia (522 BC)
Africa
- Egypt: Death of Amasis II of Egypt who opened Greek trade (526 BC)
Cambyses son of Cyrus of Persia conquers Egypt to 404 BC ending rule of Pharoahs (525 BC)
Darius links Nile and Red Sea by a canal (520 BC)
Asia
- India: Persians gain foothold in India under Darius the Great (520 BC)
Europe
- Greece: Death of Peisistratus the usurper of Athenian government (527 BC)
- Italian States: Eruption of Mt. Etna (525 BC)
Middle East
- Judaea: Work resumed on temple in Jerusalem (520 BC)
- Persia: Death of Cyrus of Persia and son Cambyses II begins to reign (529 BC)
Death of Cambyses II of Persia (522 BC)
Persia divided into 20 provinces as distant as Egypt (521 BC)
Start of the reign of Darius I of Persia (521 or 522 of Persia)
Darius campaigns against Scythians (520 BC)