Which was an accomplishment of emperor kangxi of china?
a. he fortified northern borders with mongolia by constructing the great wall
b. he elevated imperial authority through renewed emphasis on confucianism
c. he launched china's first massive overseas exploration under admiral zheng he
d. he supported pioneering use of paper currency bolster trade and commerce

it was bribing i think i might be wrong though

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