The bests locations possibles of servers in South America

I think about a server in southamerica and i think about the best location in south
america and is near of "Iquitos" from "Peru" or in the center of "Venezuela" and even
"Ecuador" this location of servers in southamerica is very good because all the South Americans receiving signal.

Here an Image of the political map of south america:




Sorry, but my english is bad...