The industrial revolution in russia was mainly financed by investors in

a. great britain
b. the united states
c. france
d. germany

the answer is a. apartheid.

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

i would also go with d hope u get it right