When did mexico gain its independence from spain?
a. 1810
b. 1821
c. 1910
d. 1917

what are local authorities doing to fix the problem

explanation:

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