federal presidential republic
<p>Mexico was the site of several advanced Amerindian civilizations -- including the Olmec, Toltec, Teotihuacan, Zapotec, Maya, and Aztec -- until Spain conquered and colonized the area in the early 16th century. Administered as the Viceroyalty of New Spain for three centuries, it achieved independence early in the 19th century. Elections held in 2000 marked the first time since Mexican Revolution in 1910 that an opposition candidate -- Vicente FOX of the National Action Party (PAN) -- defeated the party in government, the Institutional Revolutionary Party (PRI).
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