Answer:
d. stealing Spanish horses
Explanation:
The Comanches considered "stealing Spanish horses" as a major achievement.
The Comanches are Native-American nation who depended on bison, horses and raiding. During their warfare, they took captives of tribes that were weaker and made them slaves.
The Comanches made horses their target whenever they raid. In fact, they went for raiding in order to steal horses. They considered it as a major achievement. They stole horses from the Spanish, Indian nations, Mexicans and even Texans.
