1905; Saskatchewan and Alberta
No constitutional guarantee was given to French Catholic minority of these new provinces, while the federal government (Sir John A. Macdonald (father of « Canadian Federation » of 1867) did not show no will to protect these rights, any more than it did at school conflicts in New Brunswick and Manitoba. 
The « School Act » of Alberta imposed English as the ONLY language of instruction.
In Saskatchewan, the « School Act » of 1909 made English the ONLY language of instruction, but allowed limited use of French in primary schools.
(1927; the Ku Klux Klan in the province of Saskatchewan campaigned against teaching French, wearing the religious habit and the presence of crucifixes in schools.)
(1929; a third law of Saskatchewan yet abolished the French in schools that Act adopts the 1918 and shed.)
(wait ! don't go! there's more to come)