There was an interesting legal dispute between Portugal and Denmark
Portugal had sold off some of their fishing rights to the Danish government. There were many details and stipulations, things about the size of the nets, number of boats, locations, environmental protections, types of fish to be caught, etc etc. But the one that became relevant was about the usage of the fish.
See, Portugal wasn't making that much money off of selling certain fish as food anyway, but they did want to retain c…