I created territories based on counties by using my own source file. It has all the counties for all the US states. I need to Add all of Canada to one of the Territories but am unsure of how to do this.

I also need to split Missouri in half. I need the Western Half to be in one territory and the Eastern Half in the other. How would I go about figuring out which counties are in the west and which ones are in the east?

Thanks in advance for the help!

I don't know the answer to your question but please do not add Canada to the USA. We still like to think we're our own country.