Economy of Brazil compared to only US$2 billion per year last decade, remarkable growth. The agricultural sector, locally called the "agronegócio" (agro-business), has also been remarkably dynamic: for two decades this sector has kept Brazil among the most highly productive countries in areas related to the rural sector. The agricultural sector and the mining sector also supported trade surpluses which allowed for massive currency gains (rebound) and external debt paydown. Due to a downturn in Western economies, Brazil found itself in 2010 trying to halt the appreciation of the real. Data from the Asian Development Bank and the Tax Justice Network show the
Currency War of 2009–11 a source of contention, concerns over currency war had receded, along with signs that major currencies such as the Renminbi were now much less undervalued than they had been a year previously. Brazil currency had fallen substantially from its peak value against the dollar, allowing Mantega to begin rolling back anti-appreciation measures. In July, the IMF downgraded its assessment of the degree to which the Renminbi is undervalued from "substantially" to "moderately". However, Chinese officials were not pleased, suggesting that their exchange rate is no longer undervalued at all. Whereas in the US, presidential candidate Mitt Romney retains his pledge