Question: who were the prime ministers of canada during the great depression
Answer: 10 William Lyon Mackenzie King ( 1874 -- 1950 ) MP for York North , ON until 1925 MP for Prince Albert , SK December 29 , 1921 -- June 28 , 1926 1921 election ( 14th Parl 't ) 1925 election ( 15th Parl 't ) Liberal Party Named leader in 1919 12th Minister of Labour ; Chanak Crisis ; lower tariffs ; reinstated Crowsnest Pass Agreement ; 1923 Imperial Conference ; Halibut Treaty ; Continued after 1925 with third party Progressive support until resigning after his request for an election was refused by Governor General Lord Byng .