Timeline of official languages policy in Canada

Because the country contains two major language groups and numerous other linguistic minorities, in Canada official languages policy has always been an important and high-profile area of public policy. In an exhaustive 1971 study of Canadian language law prepared for the Royal Commission on Bilingualism and Biculturalism, Claude-Armand Sheppard offered this definition for the term “official language”: “[An] official language is a language in which all or some of the public affairs of a particular definition are, or can be, conducted, either by law or custom.

Source: Wikipedia — Timeline of official languages policy in Canada (CC BY-SA 4.0)