Adjacent Territories Order
The Adjacent Territories Order was a British order in council issued on 31 July 1880 to transfer the ownership of most of the remaining lands in British North America to the Dominion of Canada from 1 September the same year. This excluded the Newfoundland Colony, which joined Canada in March 1949.
The lands transferred were assigned to the North-West Territories and consolidated the Arctic region with land ceded from the Hudson's Bay Company.