A few people spend a great deal of time thinking about the origins of commerce. I am one.
I have a place and a people that I suggest are the origins of commerce.
There was a significant explosion of commerce that began in the 1600's in the Dutch Republic and it transferred major institutions to England when Holland conquered England in 1687.
It remains important that modern commerce appears first in Holland, England, Denmark and northern Germany, and to this day these people (and their colonies) remain the major outcroppings of modern commerce.
Interestingly, all of these peoples come from one group of people who were recognizable in the Roman times as Frisians. For those of you who know history the Angles and Saxons who conquered England were Frisians. To this day the English language is most closely related to Frisian. (Beowolf is a story of Frisians.)
I simply want to advance the thesis that the Frisian culture is the original culture of commerce for reasons that remain unknown to me. The actual explosion of modern commerce did not occur until the invention of many institutions in the Dutch Republic such as bonds, equity markets, global insurance, transferable partnerships, corporations and civil servants to collect taxes. But the inventors were Frisians.
Here is my thesis: the Frisians are the original culture of modern commerce.