Answer:
The best answer to the question: Which explorer searched for the Northwest passage to Asia for England, would be: John Cabot, in 1497.
Step-by-step explanation:
After the discovery of the Americas, and especially after several expeditions, several of the European powers wished to learn about the possibility of sailing towards the Pacific, since up to that point it was believed that it was impossible to cross the entire North American continent to reach from the Atlantic, to the Pacific. In 1497, King Henry VII commissioned John Cabot to attempt that feat to seek passage through the northern waterways towards the East, and to Asia. In the end, with Cabot´s voyage, the famous Northwest Passage was discovered. Today, that passage is controlled by the government of Canada.