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Sahagún was repelled by much of native culture, but he also came to admire many qualities of the Aztecs. His motives were primarily religious: he believed that to convert the natives to Christianity and eradicate their devotion to false gods, it was necessary to understand those gods and the hold they had on the Aztec people. Sahagún began conducting research into indigenous cultures in the 1540s, using a methodology that scholars consider to be a precursor to modern anthropological field technique. Commonly called the Florentine Codex, the manuscript came into the possession of the Medici no later than 1588 and is now in the Medicea Laurenziana Library in Florence. Historia general de las cosas de nueva España (General history of the things of New Spain) is an encyclopedic work about the people and culture of central Mexico compiled by Fray Bernardino de Sahagún (1499-1590), a Franciscan missionary who arrived in Mexico in 1529, eight years after completion of the Spanish conquest by Hernan Cortés. Historia general de las cosas de nueva España General History of the Things of New Spain by Fray Bernardino de Sahagún: The Florentine Codex.
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