why do most of canada's people live in southern ontario and quebec?

Agriculture, better and more jobs, they are urbanized

Explanation:

Because in Southern Ontario and Quebec, or better said, Toronto and Montreal, is better for living because of the needs and jobs or careers of the people that are living in them.

They are urbanized and people who are looking for jobs or go to university are mostly wanting to live in those urbanized areas.

That is the main cause of their living in Southern Ontario and Quebec but there are also more, for example, in these provinces we can see fertile areas and they are allowing agriculture.

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.

the economic difference between the three colonial regions. shipbuilding, whaling, fishing, and trapping where also main factors to the economy. the southern regional colonies economy was based on sugarcane, rice, cotton, tobacco, and indigo.