I want to know the answer to the following question:
Who claimed the entire Delaware River?
All the background I'm provided with is that "Europeans came to the Delaware Valley in the early 17th century, with the first settlements founded by the Dutch, who in 1623 built Fort Nassau on the Delaware River opposite the Schuylkill River in what is now Brooklawn, New Jersey.". Is that enough to answer the question?
Answer: no