Historians argue that the British Empire was built on debt.

A closer look

What built the largest empire in the world—armies, cannons, ships? Surprisingly, not only those, but an invisible force: debt. London financed wars, colonies, and railroads not simply with gold but with borrowed promises, bonds fluttering across the globe. Nations, investors, and colonies became entangled in financial threads spun from Britain’s capital. In essence, empire was expanded on paper, with credit acting like a silent army. Long before modern banks stretched over the planet, the British Empire wove an invisible net that still influences economies today.