http://www2.econ.iastate.edu... http://www2.econ.iastate.edu/classes/econ355/choi/golds.htm Evolution of International Monetary Systems http://www2.econ.iastate.edu... Evolution of International Monetary Systems http://www2.econ.iastate.edu... Evolution of International Monetary Systems 选择了金本位制 adopted the gold standard http://www2.econ.iastate.edu...