Following a rise in the popularity of the game after the global broadcasting of the 1966 World Cup, the North American Soccer League was formed in 1968. The league primarily based in the United States also had clubs in Canada and used many European professionals brought in to supplement domestic talent. Throughout the 1970s and 1980s, Canada was represented by professional teams playing in Montreal, Toronto and Vancouver with short-lived teams in Calgary and Edmonton. The NASL had a stormy relationship with FIFA and the USSF and their clubs did not compete in the CONCACAF Champions' Cup.