Final answer:
The class structure in Spanish colonies was hierarchical, with peninsulares at the top, followed by creoles, mestizos, other mixed groups, natives, and slaves at the bottom.
Step-by-step explanation:
The class structure in Spanish colonies was highly stratified and determined by ancestry and place of birth. At the top were the peninsulares, Spaniards born on the Iberian Peninsula, who generally held all significant administrative and ecclesiastical positions. Next, the creoles or criollos were Spaniards born in the colonies; they could amass wealth and land but could not hold high-ranking governmental positions. Diverse groups of mixed ancestry followed, such as mestizos (mixed Spanish and Native American heritage), mulattos (mixed European and African descent), and other classifications based on various degrees of intermingling. Natives and slaves were at the bottom of the social hierarchy, often facing harsh labor and living conditions.