how did this river get its name?
The river is named after Henry Hudson, an Englishman sailing for the Dutch East India Company.
Hudson River
The river is named after Henry Hudson, an Englishman sailing for the Dutch East India Company, who explored it in 1609, and after whom Hudson Bay in Canada is also named. 
where does the lincoln tunnel exit in manhattan New York City how long is the tunnel? UNANSWERABLE when was this constructed? Construction of the central tube started in 1934 and it opened in 1937. was there any controversy related to the planning? Yes. The city wanted the Port Authority to build part of a proposed Mid-Manhattan Expressway above 30th Street from Eighth Avenue to the West Side Elevated Highway near 12th Avenue. was this tunnel built under a river? Yes, the Hudson River. where does this river originate? Adirondack Mountains
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Hudson River [SEP] Introduction
Tidal waters influence the Hudson's flow from as far north as the city of Troy. The river is named after Henry Hudson, an Englishman sailing for the Dutch East India Company, who explored it in 1609, and after whom Hudson Bay in Canada is also named. It had previously been observed by Italian explorer Giovanni da Verrazzano sailing for King Francis I of France in 1524, as he became the first European known to have entered the Upper New York Bay, but he considered the river to be an estuary. The Dutch called the river the "North River" – with the Delaware River called the "South River" – and it formed the spine of the Dutch colony of New Netherland.