Signage indicating the headquarters of the Southside Territory.

The Southside Territory was a territory on the planet Sigma Iotia II. The territory was controlled by Boss Jojo Krako and was in conflict with the Northside Territory controlled by Bela Okmyx. (TOS: "A Piece of the Action")

It is never revealed exactly how large Krako's territory actually is, and indeed the episode is written as if Okmyx and Krako are both within a single city, as evident by Kirk and Spock driving between the two mob headquarters in a classic automobile in a relatively short amount of time.
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