A challenge that Italy faced after unification was too much control by the church.
ongoing wars with other nations.
political unrest and instability.
demand for new nation-states.

dirty, contaminated water

contaminated food,

chlostrophobic living spaces,

mice infestation,

etc,

me on my last question.

so, based on the research i've done. the u.s. government were always on a wild goose chase just to take down castro. he then retired his trone to his brother raul in 2008 due to some health issues. so it's obvious your answer would be:

castro had no allies from which he could receive aid.

hope this and have a fantastic day!

                                                    -wolfiewolffromsketch