New Sweden, Nya Sverige was founded in 1638 and rose to its height under governor Johan Björnsson Printz (1643–1653). Led by governor Printz, the settlement extended as far north as Fort Christina on both sides of the Delaware River. He helped to improve the military and commercial status of the colony by constructing Fort Nya Elfsborg, which is now near Salem New Jersey, on the east side of the Delaware River. Swedesboro and Bridgeport were founded as part of the colony. In 1655 the Dutch asserted control over the territory.

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