The Canadian Temperance Act allows municipalities and counties to prohibit the sale of alcohol in retail outlets. Several groups helped facilitate and promote the temperance movement on a national level, such as the Woman's Christian Temperance Union and the Dominion Alliance for the Total Suppression of the Liquor Traffic. This eventually led to most provinces (all except Quebec) voting in favor of prohibition.
Source: Hallowell, G. (2013). Prohibition. Historica Canada.