My SubStack post offers a brief introduction to free trade
open.substack.com/pub/thewhyex...
Understandably the global marketplace economy is very complex considering the volume of trade between nations
Yet any nation sees free trade opportunities between its own internal market participants

Why free trade benefits all trading partners, producers and consumers ...
Free trade allows markets to operate efficiently providing consumers with good value for products and services they wish to purchase. Tariffs, however, distort the markets hiding real prices.