Markets and slave countries

I have 2 slave countries, 1 enterprise and 1 main country. All my entities are in a common market except for 1 slave country. When I offer/accept contracts for my slave country that isn't in my common market it only offers/accepts for that slave country. Isn't my local market able to umbrella that slave? Should I leave my common market and setup my own common market. My enterprise produces enough to supply all my needs (80%). Wonduring what that would do to profit/score?

all of them must apply to join the CM. once thur, click on common market on at the top of the screen then hit "accept contracts" then tell all your corps to " local and common market " .