[DiogenesLamp]

You have not made your point easy to grasp here. I'm not sure your claimed evidence supports your claimed assertion, and it looks like more trouble to read through it and analyze the numbers in light of trade numbers for that era than it would be worth.

To be compelling you have to keep your information simple and easy to grasp.

[SoCal Pubbie]

How is it so difficult for you to grasp that contemporary news accounts of British ships carrying Southern goods from Southern ports for export overseas, with the actual names of the vessels and manifests of their cargo listed, proof that no one was forced to use Northern ships?