Answer:
a. "Safety in numbers"
Explanation: They stayed in wagon trains together to be more protected and to make sure no one got stolen by Native Americans.
Both the Maya and the Inca had similar social stuctures;
men and women were to be considered close to equal, though, in some instinces, women were still lesser to men. Both drained swamps and carved terraces for agriculture, which they depended on heavily, like all other ancient civilizations in the Americas.
The Maya and Inca both shared a similar calender system, though, the Inca calender was a bit more complicated, and both civilizations built great stone monuments.
Plus, they practiced metallurgy, sacraficial rituals, and polytheism
