the article is about how dictatorships are a worse form of government than republics. It means that dictatorships fail because they creates poorer and worse countries. not that they fails because they are not able to maintain themselves

argentina has a lot of immigration from other latin american countries

what are you talking about, the underground railroad has always been the 4/5 subway line in NYC that connects the Trump Building in Wall Street with the Trump Tower in 5th Ave, right?