The site of advanced Amerindian civilizations, Mexico came under Spanish rule for three centuries before achieving independence early in the 19th century. A devaluation of the peso in late 1994 threw Mexico into economic turmoil, triggering the worst recession in over half a century. The global financial crisis beginning in late 2008 caused another massive economic downturn the following year. As the economy recovers, ongoing economic and social concerns include low real wages, underemployment for a large segment of the population, inequitable income distribution, and few advancement opportunities for the largely Amerindian population in the impoverished southern states. The elections held in 2000 marked the first time since the 1910 Mexican Revolution that an opposition candidate - Vicente FOX of the National Action Party (PAN) - defeated the party in government, the Institutional Revolutionary Party (PRI). He was succeeded in 2006 by another PAN candidate Felipe CALDERON. National elections, including the presidential election, are scheduled for July 2012. Since 2007, Mexico's powerful drug-trafficking organizations have engaged in bloody fueding, resulting in tens of thousands of drug-related homicides.