Final answer:
Delaware was the colony purchased to provide an outlet to the sea, being strategically important for trade and transportation.
Step-by-step explanation:
Delaware, a small Mid-Atlantic U.S. state, sits on a peninsula marked by dune-backed beaches bordering the Atlantic Ocean, Delaware River and Delaware Bay. In Dover, the capital, First State Heritage Park encompasses 18th-century Colonial landmarks like the Georgian-style Old State House.
The colony that was purchased for the purpose of providing an outlet to the sea was Delaware. Initially part of the Swedish colony of New Sweden, the land that would become Delaware was taken over by the Dutch and later by the English, who understood the strategic and economic importance of having access to the Atlantic Ocean for trade and transportation. This geographical advantage was essential for the colony's development and integration within the broader Atlantic World.