Human presence in Mexico dates back to 30,000 years before present. After thousands of years of cultural development, emerged in the Mesoamerican Mexican territory, and oasisamericanas aridoamericanas cultures. After nearly 300 years of Spanish rule, Mexico began the struggle for political independence in 1810. Later, for nearly a century, the country was embroiled in a series of civil wars and foreign invasions that had an impact in all areas of life Mexicans. For much of the twentieth century (mainly the first half) a period of high economic growth in the context of a policy dominated by a single political party took place.