He wrote in Latin the first accounts of explorations in the Americas in a series of letters and reports that were published from 1511 to 1530 in chapters called "Decades". The first three "Decades", together with a description of his experiences in Egypt, were published in 1516 under the title: "De orbe novo decades cum Legatione Babylonica" or, for short, "De orbe novo" ("On the New World").
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