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You are asking a lot of very broad questions. Try to be more specific, the answer will depend on a large number of factors that matter to you specifically.
 
Well I want to know in terms of job and business opportunities.
https://www.canadavisa.com/canada-i...reads/vancouver-vs-toronto-vs-calgary.559936/

Check out the above thread. There are also many more on jobs and living expenses on this forum for Toronto vs Vancouver. Can't comment on business opportunities as that needs to be very specific and varies from province to province. Google is also your best friend to read up on taxes, import/export, demographics, etc.