For 80 years, the US dollar has been the world's reserve currency. Its dominance was built on US economic strength, institutional trust, and the post-World War Two Bretton Woods system, which pegged global currencies to the dollar rather than gold.

For 80 years, the US dollar has been the world's reserve currency. Its dominance was built on US economic strength, institutional trust, and the post-World War Two Bretton Woods system, which pegged global currencies to the dollar rather than gold.