How did shifting social structures lead to revolution in Spanish colonies?

A. The status of lower-class people in the caste system did not change as their wealth increased, leading to frustrations.
B. Enslaved people sought to better their social status, leading to revolt in Haiti.
C. Middle-class business owners turned to piracy, a form of resistance to the British, when they became lower class due to government restrictions.
D. White people born in Spain were refused privileges, ignoring their increasing wealth and influence.

A. The status of lower-class people in the caste system did not change as their wealth increased, leading to frustrations.