Answer:
The Great War, lasting from August 1914 to November 1918, had a huge effect on Canada. In the hothouse atmosphere created by the conflict, attitudes changed faster, tensions festered more quickly and events forced governments and groups to take new positions at an unheard-of pace. The war changed everything.
The war united most Canadians in a common cause even as the extremity of national effort nearly tore the country apart. ... The resulting post-war debt of some $2 billion was owed mostly to other Canadians, a fact which fundamentally altered the nature of the post-war economy. Politically, the war was also a watershed.
The demand for Canada's goods created lots of job opportunities. This was especially good for women who were unemployed because they were able to take over men's jobs when they were away working in the trenches. The demand for war supplies helped boom Canada's economy during the war.
Even though there were some positive things that came out of the war, the negative effect it caused was much greater. More than 60 000 Canadians were killed and thousands were wounded. ... The war helped the economy of Canada, jobs were created when factories were commissioned to build war supplies.
To conclude, overall Canada's participation in the first world war was negative. There arte many reasons the war was not worht it but three specific reasons are: its poor effect on Canadian workers, Canadian women and the damage it caused our English-French relations.