Which 1720 bubble involved John Law’s Banque Générale and France’s paper-money experiment?

The 1720 bubble involving John Law’s Banque Générale and France’s paper-money experiment was the Mississippi Bubble.

John Law established the Banque Générale in 1716, and it later became the Banque Royale under government control. Law’s financial system connected banknotes, public debt, and the Mississippi Company, whose shares represented anticipated profits from French colonial trade. The arrangement encouraged rapid expansion of money and credit.

Share prices rose as investors exchanged currency and other assets for company stock. When confidence collapsed, the banknotes and shares lost value, creating a broader financial crisis rather than an isolated fall in one listed company. Law’s system was dismantled, and he fled France.

This question focuses on the financial machinery behind the bubble, while the South Sea Bubble involved Britain’s South Sea Company. Both collapsed in 1720, making them easy to conflate, but they operated in different countries and under different government arrangements.