What was the emergency that caused Cincinnatus to be appointed dictator and fulfill his civic duty?

The aim of selecting him as the dictator was to rescue the consular army which was surrounded by Aequi.

Explanation:

The reason why Cincinnatus was appointed as the dictator of Rome in the 458 BC which was the time of extreme emergency in the country, was that the army of consular had to be rescued which was surrounded by the Aequi on Mount Algidus.

The moment he was selected as the dictator of Rome for this purpose, it is said that he defeated the army with in a day and celebrated the huge victory in Rome.

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