Whose expedition first traversed the Northwest Passage?

Roald Amundsen became the first explorer to successfully navigate the Northwest Passage, the sea route through the Arctic archipelago of Canada. He made the journey between 1903 and 1906 aboard the small ship Gjøa. Amundsen and his crew wintered in the Arctic and learned from Inuit knowledge to survive the harsh conditions. The route had been sought for centuries as a shortcut between the Atlantic and Pacific. His voyage was a major achievement in polar exploration and navigation.