Mr Curator, or I may I call you Mad? Please take a look at this guy:-
https://steemit.com/economics/@spectrumecons/trade-bloc-or-trade-block
The subject matter may well be a little dry for some but its well researched absolutely top drawer writing.
Please give him a little visit, he makes a pittance in comparison to the effort and quality.
Thanks Mad, best wishes to you and yours :-)