A kiva is a room used by Puebloans for religious rituals and political meetings, many of them associated with the kachina belief system. Among the modern Hopi and most other Pueblo people, kivas are square-walled and underground, and are used for spiritual ceremonies
-From Wikipedia
https://en.wikipedia.org/wiki/Kiva
B) The candidate must be a native-born American citizen
Answer:
John C Calhoun
Explanation:
He was a native to Sout Carolina and he proposed the nullification theory.
Carlos I was the most powerful ruler in Europe.