The document summarizes key aspects of different international monetary systems throughout history:
(1) The gold standard (1880-1914) which fixed exchange rates to gold and allowed adjustment through price-specie flows. It lacked flexibility but provided stable rates.
(2) The Bretton Woods system (1944-1973) which fixed rates within 1% bands and used capital controls. It was more flexible than the gold standard but collapsed due to the Triffin dilemma.
(3) The present floating rate system (1973-onward) where exchange rates are set by market supply and demand with no obligation to maintain fixed rates. Monetary policy aims to smooth short-term variability.