Commerce depends on trust more than any other activity does.

Evidence

Economic transactions are clearly more heavily dependent on the agencies of trust than any other, and in every European language they share a common vocabulary: ‘commerce’, ‘credit’, ‘honour’, and ‘trust’ itself are all terms which have specific economic applications. Confidence, as Filangieri pointed out, ‘is the soul of commerce’, and the credit it alone can generate must be regarded as a ‘second species of money’. — Diego Gambetta, Trust - Making and Breaking Cooperative…, 1743

Categorization

• DEFINE: The etymological claim that commerce, credit, honour, and trust share a European vocabulary across languages.
• XREF: Filangieri’s ‘second species of money’ directly supports the reader’s interest in trust as a constraint on opportunistic behavior — trust as a medium that substitutes for observable enforcement.