Canadiens–Maple Leafs rivalry - Wikipedia
https://en.wikipedia.org/wiki/Canadiens–Maple_Leafs_rivalryThe rivalry between Montreal and Toronto predates the foundation of either hockey club, with the two cities having been considered economic rivals since the mid-19th century, as well as cultural rivals from the mid-20th century. Toronto emerged as an economic rival to Montreal during the 1850s; although Montreal remained the Province of Canada's largest city during this period, doubling the population of Toronto. Although Montreal and Toronto were economic rivals, their …