The year following the creation of the Stickeen Territories, part of the Stikine returned to the North-Western Territory when boundaries were adjusted and the Colony of British Columbia was extended to the 60th parallel north, a measure which also brought into British Columbia its portion of the Peace River Block, which had not been part of the Stikine Territory. In 1868, shortly after Canadian Confederation, the Hudson's Bay Company agreed to surrender its vast territories to the new dominion. However, it was not until July 15, 1870, that the transfer to Canada was made. On that date the North-Western Territory became part of the newly created Northwest Territories (often stylized as the North-West Territories). In 1880, the British Arctic Territories were claimed by Canada and later formed the Northwest Territories and Nunavut. In 1898 the Yukon Territory was formed when the areas west of the Mackenzie Mountains were removed from the Northwest Territories during the Klondike Gold Rush, again as with the Stickeen Territory to prevent efforts at American takeover and also to enable easier governance.