Western Europe laid out a complicated and sweeping exchange network with freight ships being the principle workhorse for the development of products, Cogs and Hulks are two instances of such freight ships.[62] Many ports would foster their own broad exchange organizations. The English port city of Bristol exchanged with people groups based on what is advanced Iceland, up and down the western bank of Fra nce, and down to what in particular is cu rrentli,r Spain.[63]