Economy of Indonesia the Republic of Indonesia), a currency issued by the Republican Government which was the predecessor of Rupiah. Despite so, currency issued during the Japanese occupation and by Dutch authorities were still in circulation, and simplicity of the ORI made its counterfeiting straightforward, worsening matters. Once the nation's independence has been recognised by the Netherlands on December 1949, the next 10 years saw the devaluation of Dutch banknotes into half their value ("Gunting Sjafruddin"), dissolution of the United States of Indonesia in 1950, and during the liberal democracy period the nationalization of "De Javasche Bank" into modern Bank Indonesia and the
World currency a single world currency is unnecessary, because the U.S. dollar is providing many of the benefits of a world currency while avoiding some of the costs. If the world does not form an optimum currency area, then it would be economically inefficient for the world to share one currency. In the present world, nations are not able to work together closely enough to be able to produce and support a common currency. There has to be a high level of trust between different countries before a true world currency could be created. A world currency might even undermine national sovereignty