Why did so many Italians choose this particular country to immigrate to?
Same goes for Uruguay, although many of the Uruguayans I have met have connections to Argentina.
hi! there's lots of room for more detail, but here's something to get you started
Why are there so many Argentinians with Italian last names? - featuring /u/Quirite
comment in The AskHistorians Pope thread - ask all your Pope questions here! - featuring /u/Kit_Emmuorto
Both posts have been archived by now, so if you have follow-up questions on these, just ask them here; mention the relevant user's username so they'll be notified