Which sectional tension was the result of Henry Clay's American System? o The South was opposed to the tariffs.
o The North was opposed to the National Bank.
o The North was opposed to the National Road.
o The South was opposed to states' rights.

the indians crossed artificial boundaries, setting the stage for conflict

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.

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                                                    -wolfiewolffromsketch