teams in the 1920s and 1930s, leading to a rise in senior-level amateur teams and leagues in cities such as Quebec City and Ottawa, former NHL cities. After World War II, several of these teams became professional in the Quebec Hockey League, which included several stars such as Jean Beliveau and Willie O'Ree. In the 1950s, with the rise of NHL television broadcasts, such as those on Hockey Night in Canada, attendance suffered and the minor professional leagues folded or merged to survive. A new Western Hockey League was formed on the west coast with teams in several cities including Vancouver. The WHL's Vancouver Canucks organization would join the NHL in 1970. Since the demise of the QHL, the American Hockey League (AHL) has had Canadian teams, starting with the Quebec Aces. In 1972, the World Hockey Association was formed with professional teams in Edmonton, Ottawa, Quebec City and Winnipeg. Ottawa relocated to Toronto after one season, but the other teams survived until the WHA merged with the NHL in 1979, with Edmonton, Quebec City and Winnipeg joined the NHL, along with the Hartford, Connecticut-based New England Whalers, which joined the NHL as the Hartford Whalers. The inclusion of all three Canadian WHA teams was a key point of contention in merger talks between the NHL and WHA, and only after the NHL agreed to that stipulation was agreed upon did the merger happen. In 1980, the Atlanta franchise moved to Calgary. In the 1990s, the Quebec and Winnipeg franchises relocated to the U.S., to Denver and Phoenix respectively, while Ottawa rejoined the NHL in 1992; the NHL returned to Winnipeg in 2011, and a proposal to return to Quebec currently sits in purgatory. On February 16, 2005, the NHL became the first major professional team sport in North America to cancel an entire season because of a labor dispute. Play resumed again in the fall of 2005. During the dispute, controversy arose over the decision not to award the Stanley Cup; some considered this decision a violation of the terms of the Stanley Cup's handover ("Deed of Gift") to the NHL. Following a legal challenge, it was agreed that the Cup's trustees could award the Cup to a non-NHL team, although this did not actually occur. Czechoslovakia In Czechoslovakia, the Czechoslovak Extraliga was the elite ice hockey league in Czechoslovakia from 1930 until 1993, when the country split into