What was William Lyon Mackenzie king's role in 1920?

Mackenzie King was Prime Minister of Canada during the Second World War.

Canada contributed food supplies, financial aid, the British Commonwealth Air Training Plan, ships, aircraft, tanks and over a million Canadian troops to the Allied cause. The close friendship of King with British Prime Minister Winston Churchill and U.S. President F. D. Roosevelt was one of the cornerstones of the Allied effort.

He enacted conscription for defensive activities and homeland security, but only sent volunteers to fight in Europe until the last years of the war. This was politically divisive as the French speaking people of Quebec did not want to fight in Europe, while the English speaking population of the other provinces wanted to enact wartime conscription to support the soldiers already in Europe.

In the end he managed to compromise and only send a few thousand soldiers to Europe who had not volunteered to fight abroad, and then mostly in support roles and not fighting roles. He managed to keep Canada unified throughout the war and the Great Depression.