The events that led to the end of Athens's power and greatest glory include:
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The defeat of the Athenian fleet by Sparta - This was a significant turning point in the Peloponnesian War, leading to Athens's eventual defeat.
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The death of Pericles and thousands of others from a plague - The plague had a devastating impact on Athens during the war, weakening its population and leadership.
The other options listed (the earthquake that destroyed the Parthenon and much of the Acropolis, and a ten-year siege and blockade by the Assyrian Empire) are not correct in this context, as they did not directly contribute to the decline of Athenian power in the way described. The Assyrian Empire was not involved in the events surrounding Athens during its decline.