It was Octavio Paz, a Mexican writer who said: "Argentines are Italians who speak Spanish and believe themselves to be French"
Going back to my question, this idea came from a book I am reading called "Nuestros Abuelos Italianos(Our Italian Grandparents)", by Alberto Sarramone. I recommend it, it's really good. In the book, the author explains that there where two reasons why Argentineans didn't end up speaking Italian. One is the different languages and the other is the Argentinean education program.
As Maverick said, in 1895, Italians wheren't more than 12% percent of the total population, but their descendants where another 8% at least, because most of the Italian immigration to Argentina was based on young marriages. And if we take in consideration that in the Pampas(that is Buenos Aires, Santa Fe, La Pampa, part of Cordoba), Chaco and Formosa, and Northern Patagonia(Rio Negro, Chubut and Neuquen), most of the habitants where Italians(especially in the places like Chaco and Patagonia), then it could be a posibility to have half of the country become Italian speaking.
I think that if we butterfly away Sarmiento's education plans(just say he didn't get the idea), together with the North Italians having a common language(they were united by lets say Milan during part of the middle ages), then those areas could become Italian speaking or at least be mainly Italian speaking. Then, by influence, it will spread to Southern Patagonia.
What do you think the effects in Argentina will be? Could the whole country become Italian Speaking, or the situation will revert and it will become all Spanish speaking again?
If it becomes Italian Speaking, what do you think will be the effects in its relationship with the Spanish speaking Latin America?