* Hudson River: This is arguably his most famous contribution, though the river was likely known to Native Americans beforehand. Hudson explored it in 1609, searching for a passage to Asia.
* New Netherland: While not a place itself, this was the name given to the area claimed by the Dutch based on Hudson's explorations. It encompassed much of what is now New York and New Jersey.
It's important to note that the names of specific locations within the Hudson River, like Manhattan Island, were likely in use by Native Americans long before Hudson's arrival. His exploration, however, led to their adoption by European maps and records.
It's worth mentioning that Hudson didn't actually claim or name any land for England or the Netherlands during his expeditions. His voyages were primarily driven by the search for a Northwest Passage, and his exploration of the Hudson River was a byproduct of this search. His contributions lie in mapping and describing the area, which later led to European claims and the development of New Netherland.