Question: What colony along the lower reaches of the Delaware River in North America from 1638 to 1655, featured the fortification and settlement of Fort Nya Elfsborg?
Sentence (from "New Sweden"): New Sweden (Swedish: "Nya Sverige", Finnish: "Uusi Ruotsi" , Latin: "Nova Svecia" ) was a Swedish colony along the lower reaches of the Delaware River in North America from 1638 to 1655, established during the devastating Thirty Years' War while Sweden was a significant Northern European military power.
Relevant evidence: Yes