the.com/trade
The oldest human technology: turning what you have into what you want without violence.
means To exchange goods, services, or money with someone — or the business or skill by which someone makes a living.
from Trade comes from Middle Low German 'trade' meaning a track or course — the path a person treads. It's a cousin of the English word 'tread,' and it first meant a worn route or a way of going. From the idea of a habitual path came the sense of a regular line of work, and from there the buying, selling, and swapping we mean today. So the merchant's 'trade' is, quite literally, the road they walk again and again.
older than moneyBarter predates coins by tens of thousands of years
silk roadA 4,000-mile network moving silk, ideas, and plagues
comparative advantageEven worse-at-everything nations still profit by specializing
spice warsNutmeg once sparked colonial empires and bloody monopolies
trade windsNamed for ships, not commerce — old meaning was course