* Scale of involvement: Canada's involvement in World War II was much greater than in World War I. Over 1 million Canadians served in the military during World War II, compared to just over 600,000 in World War I.
* Casualties: Canada suffered much higher casualties in World War II than in World War I. Over 45,000 Canadians died in World War II, compared to just over 60,000 in World War I.
* Social impact: World War II had a profound social impact on Canada. The war effort required a massive mobilization of resources and labour, and it led to significant changes in the role of women in Canadian society.
* Economic impact: World War II had a major impact on the Canadian economy. The war effort led to a boom in manufacturing and employment, and it helped to lay the foundation for Canada's post-war economic prosperity.
* Technological impact: World War II saw the development of a number of new technologies, including the atomic bomb and the jet engine. These technologies had a profound impact on warfare, and they also had a significant impact on Canadian society.
In conclusion, World War II had a greater impact on Canada than World War I due to the scale of involvement, casualties, social, economic, and technological changes that it brought about.