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The Springfield Commonwealth is a Sub-Soverign State of the Deltoran Republic and it is located around the city of Springfield. It borders Jefferson to the north, Giradot to the east, and borders Union Star to the south and west. It was captured by Cuba in the Invasion of Deltora, and recaptured by Deltora during the Southern Counterattack. It is a major spot for tourism and it produces timber and iron ore (which it exports to other states and nations). The Ozark Plateau is situated in this territory.