Christopher Columbus founded the New World, and thought it was part of Asia.
As late as the 1800's they were still seeking a passage to Asia. Your question needs a little work to be able to answer.
Frobisher
There never was one in the first place
True. All of them were seeking a route to Asia.
To find a passage to Asia.
The explorer who claimed territory for the Dutch was Henry Hudson. He discovered both the Hudson River in present-day New York and Hudson Bay in Canada while searching for a Northwest Passage to Asia.
he never found the northwest passage to Asia!!
Giovanni da Verrazano was a famous Florentine explorer. In 1524, he was commissioned by King Francis I to search for a Northwest Passage to Asia through North America.
Several countries, including England, France, and the Netherlands, sent explorers in search of a Northwest Passage to Asia during the Age of Exploration. Notable figures include English explorer Martin Waldseemüller and French explorer Jacques Cartier, who sought a route through the Arctic and Canada. Additionally, the Dutch sent explorers like Henry Hudson, who also aimed to discover this elusive passage. These expeditions were motivated by the desire to access Asian trade routes more efficiently.
Ferdinand Magellan was the first explorer to reach Asia by ship. He was a Portuguese explorer who lived from 1480 to 1521 CE.
A Northwest Passage to Asia