In 1938, the Government of Canada invited John Grierson, a British film critic and film-maker, to study the state of the government's film production and this led to the National Film Act of 1939 and the establishment of the National Film Board of Canada, an agency of the Canadian government. In part, it was founded to create propaganda in support of the Second World War, and the National Film Act of 1950 gave it the mandate "to interpret Canada to Canadians and to other nations." In the late 1950s, Québécois filmmakers at the NFB and the NFB "Candid Eye" series of films pioneered the documentary processes that became known as "direct cinema" or "cinema vérité".