The person's opinion on the Spanish caste system was most important in determining a person's social standing in Spain's American colonies.
The Spanish Caste System was created for a number of reasons, ranging from the maintenance of power and superiority for all the races in the American colonies.
A person's standing and position in the society was heavily dependent on his viewpoints on the Spanish Caste System while he continued to live in the American colonial regions.
Hence, option B states about the Spanish caste system.
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