Why do some Latin American countries have a higher life expectancy than others?

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Disregard the number of sources I requested. Use as many as you can find to reach the 5 pages. I need a literary form with sources that can be used to write a paper about the topic. I prefer the sources to be articles found online, but books are fine if not many articles can be found, but no more than two books. I have attached a page explaining the instructions in more detail.
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