Final answer:
The Spaniards, with their steel weapons and armor, had a clear technology advantage over the Aztec and Inca, whose traditional weaponry could not match up. Moreover, disease like smallpox and political alliances with other native tribes helped the Spaniards to achieve victory. The correct answer is option b.
Step-by-step explanation:
The correct statement that accurately summarizes how the differences in military technology between the Spaniards and the Aztec and Inca affected their battles is that the Indigenous forces, which sometimes numbered in the thousands, were generally no match for the Spanish, due to the Spaniards' military prowess. The Spaniards enjoyed the advantages of possessing steel armor, steel swords, and the tactical benefit of horseback attacks, contrasted with the more traditional Aztec and Inca weapons, such as bows, arrows, and spears. The Europeans also inadvertently introduced diseases like smallpox, which decimated native populations, contributing to their conquest. Additionally, the Spanish exploited political divisions within the Aztec and Inca empires, forming alliances with subjugated tribes and leveraging their discontent to help overthrow the dominant powers.