Which are the principal economical partners of Canada?

Question

Living in Canada, I can answer that.
The principal economic partner of Canada is the USA, and the number one partner of the USA is Canada.
Together we form the largest trading partnership in the world, at about 1 Billion Dollars per day.
Canada's other main partners are the European countries, Japan and China.

Check the Economy section of this site for Canada's Import Partners and Export Partners.

https://www.cia.gov/library/publications/the-world-factbook/geos/ca.html#Econ

here is a webpage for the data you need

http://www.2ontario.com/welcome/coca_401.asp