The Bretton Woods system and institutions setup after World War II
The U.S. dollar as a reserve currency
Most of the international trades are done in U.S. Dollar and commodities are quoted in U.S. Dollar
The role of the Federal Reserve and its using U.S. government debt as one of its tools to carry out monetary policy
What is the relationship between the current account and capital account?
How is the U.S. dollar recycled back to the U.S. from trade partners?
Why the dollar recycles back to the U.S.?