 The main temperance organizations that emerged at the beginning of the prohibition era in Canada were the Dominion Alliance for the Total Suppression of the Liquor Traffic and the Woman's Christian Temperance Union (WCTU) of Canada.Protestant denominations, including Baptists, Methodists, Presbyterians and Congregationalists, generally supported prohibition and campaigned for it beginning in the late 19th century.Prohibition was an important aspect of the Protestant Social Gospel.