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When the US dollar overtook sterling as the world’s dominant currency, how quickly did the change happen?

  • Almost overnight 174 votes (43.1%)
  • Within about five years 93 votes (23.0%)
  • Over several decades 81 votes (20.0%)
  • Only after Britain abandoned sterling 56 votes (13.9%)

Total votes: 404

Answer: Over several decades

Britain’s experience shows that global financial dominance doesn’t disappear overnight. Even as America overtook Britain economically and politically, sterling remained an important international currency for decades, thanks to established trade relationships, financial institutions and the simple fact that businesses and governments were already accustomed to using it.

That’s the investment lesson for today: even if Bill is right that American dominance is shrinking, it doesn’t follow that the dollar will suddenly lose its position. Big shifts in the global financial system can take decades to play out – meaning recognising the direction of change is only half the challenge for investors; timing it is the other half.