Why did Alexander Mackenzie keep going on his journey?

Alexander Mackenzie continued on his journey driven by a relentless pursuit of exploration and the desire to find a route to the Pacific Ocean. His determination stemmed from both personal ambition and the strategic interests of the fur trading companies he represented. Despite facing numerous challenges, including harsh weather and difficult terrain, Mackenzie was motivated by the hope of discovering new trade opportunities and expanding geographical knowledge. His journey ultimately marked a significant achievement in the exploration of North America.