Conversation so far:
What was Kit Carson's campaign against the Navajo?
Kit Carson was to shoot all males on sight and take the women and children captives. No peace treaties were to be made until all Navajos were on the reservation.
Was Kit Carson successful in his campaign against the Navajos?
Yes. One hundred eighty-eight Navajo surrendered and were sent to Bosque Redondo.
Were the Navajo people able to fight back against Kit Carson's campaign against them?
The Navajo people ran and hid for the most part. In the end they surrendered.

Question: Why did Carson campaign against the Navajo?
Self-contained rewrite: Why did Kit Carson campaign against the Navajo?