Question: What currency is used by the country who controlled the birthplace of Manuel John Johnson as a colony?

<P0-S0> He was born in Macao, China, the son of John William Roberts of the East India Company and was educated at Mr Styles' Classical Academy in Thames Ditton and at the Addiscombe Military Seminary for service in the East India Company (the HEIC). <SEP> <P1-S0> at the start of john's reign there was a sudden change in prices, as bad harvests and high demand for food resulted in much higher prices for grain and animals. <P1-S1> this inflationary pressure was to continue for the rest of the 13th century and had long-term economic consequences for england. <P1-S2> the resulting social pressures were complicated by bursts of deflation that resulted from john's military campaigns. <P1-S3> it was usual at the time for the king to collect taxes in silver, which was then re-minted into new coins; these coins would then be put in barrels and sent to royal castles around the country, to be used to hire mercenaries or to meet other costs. <P1-S4> at those times when john was preparing for campaigns in normandy, for example, huge quantities of silver had to be withdrawn from the economy and stored for months, which unintentionally resulted in periods during which silver coins were simply hard to come by, commercial credit difficult to acquire and deflationary pressure placed on the economy. <P1-S5> the result was political unrest across the country. <P1-S6> john attempted to address some of the problems with the english currency in 1204 and 1205 by carrying out a radical overhaul of the coinage, improving its quality and consistency. <SEP> <P2-S0> Macau was administered by the Portuguese Empire and its inheritor states from the mid-16th century until late 1999, when it constituted the last remaining European colony in Asia. <P2-S1> Portuguese traders first settled in Macau in the 1550s. <P2-S2> The Portuguese Empire administered the city under Chinese authority and sovereignty until 1887, when Macau became a colony through a mutual agreement between the two countries. <P2-S3> Sovereignty over Macau was transferred back to China on 20 December 1999. <P2-S4> The Joint Declaration on the Question of Macau and Macau Basic Law stipulate that Macau operate with a high degree of autonomy until at least 2049, fifty years after the transfer. <P2-S5> In 1557, Macau was leased to Portugal from Ming China as a trading port. <SEP> <P3-S0> the name "" was taken from the niger river running through the country. <P3-S1> this name was coined in the late 19th century by british journalist flora shaw, who later married lord lugard, a british colonial administrator. <P3-S2> the origin of the name "niger", which originally applied only to the middle reaches of the niger river, is uncertain. <P3-S3> the word is likely an alteration of the tuareg name "egerew n-igerewen" used by inhabitants along the middle reaches of the river around timbuktu prior to 19th-century european colonialism. <SEP> <P4-S0> Portugal's central bank is the Banco de Portugal, an integral part of the European System of Central Banks. <P4-S1> Most industries, businesses and financial institutions are concentrated in the Lisbon and Porto metropolitan areas—the Setúbal, Aveiro, Braga, Coimbra and Leiria districts are the biggest economic centres outside these two main areas. <P4-S2> [citation needed] According to World Travel Awards, Portugal is the Europe's Leading Golf Destination 2012 and 2013. <P4-S3> The Portuguese currency is the euro (€), which replaced the Portuguese Escudo, and the country was one of the original member states of the eurozone.