Say i am the Ottoman Empire in 1884-1855... what are the issues of trade rights between colonies-should tarrifs be allowed, can you have closed markets (colonies only buy/sell from motherland), how about right-of-ways for colonies lacking ocean/sea access-should i be allowed to build roads and railroads through other countries, will there be freedom to travel rivers that go through various colonies????
The extension of roads and railroads from the Ottoman Empire into other countries, or colonized countries, could only proceed upon the agreement of treaties with the colonizing empire, e.g., the British Empire.
I think the long term benefits of open markets win out in this scenario. Everyone is a winner if you have open markets whereas if you impose tarrifs that is going to indirectly impact on the health of your own empire. Open markets will help your colonies to thrive which will help you in the long run.
I don't think closed markets help you in the long run. The markets will take care of themselves. If it is cheaper to get things from your own colonies, everyone will benefit. You have cheaper goods, and they have a buyer.
I think that you have to be careful about this kind of thing. The European countries are way better prepared than you are to benefit from free trade. If you allow it, it seems like you'll be giving them a hand. You'll be helping them get more resources and markets and your industries won't be able to compete with theirs so you won't get much benefit from free trade with their colonies.