End of an Age: Difference between revisions

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** The ending of the Paleozoic thanks to the [[Apocalypse How|Great Dying]] is an even earlier example.

*** And a bit more than two billion years before that, the "Oxygen Catastrophe" marked the extinction of most anaerobic organisms as oxygen first became a significant part of Earth's atmosphere.

===Antiquity===

* The invasions of [[Alexander the Great]] marked the end of both the Greek city states and the Achaemenid Empire as major powers. For the next 2100 hundred years, Greece would be controlled by foreign powers, while Persia would remain under Greek control under the 2nd century BC.

* The defeat of Antiochus III at the battle of Magnesia marked the beginning of the end of the Seleucid Empire. Before, the Empire was the strongest of the successor kingdoms and had its power restored to its heights under its founder Selecus I. After the defeat, along with Antiochus's death two years later, the Empire would fall into a repeated cycle of civil wars, lost territory, and would ultimately be ended by Rome 130 years later.

* The Ptolemaic Kingdom of Egypt met its end as a major power after being defeated by Antiochus III in the Fifth Syrian War a decade prior. Whereas beforehand it was able to fight the Seleucids over Syria for a century and a powerful navy to control the waves, afterward it was reduced strictly to Egypt, and was effectively a Roman client state due to relying on Rome to avoid being annexed.

=== Dark Ages ===