Page "Ontario" Paragraph 27

The northern and western boundaries of Ontario were in dispute after Confederation.

Ontario's right to Northwestern Ontario was determined by the Judicial Committee of the Privy Council in 1884 and confirmed by the Canada ( Ontario Boundary ) Act, 1889 of the Parliament of the United Kingdom.

By 1899, there were seven northern districts: Algoma, Manitoulin, Muskoka, Nipissing, Parry Sound, Rainy River, and Thunder Bay.

Four more northern districts were created between 1907 and 1912: Cochrane, Kenora, Sudbury and Timiskaming.