The document summarizes the exploration of the interior and Pacific coast of North America by European fur traders and maritime explorers between the 17th-19th centuries. It describes key explorers such as Samuel Hearne who mapped northern Canada for the HBC, Alexander Mackenzie who crossed Canada by land and reached the Pacific, and Simon Fraser who explored central British Columbia region for the NWC. It also outlines maritime explorers like Cook, Vancouver and Perez who mapped the Pacific coast and made contact with indigenous groups in Alaska, British Columbia and beyond.