Conversation so far:
What was important about the Santa Fe Trail?
In August 1826, Kit Carson ran away from his saddling apprenticeship. He went west with a caravan of fur trappers. They made their trek over the Santa Fe Trail.
How long did Kit Carson stay gone after running away from his saddling apprenticeship?
Where did Kit Carson run away to?
They made their trek over the Santa Fe Trail to Santa Fe, the capital of Santa Fe de Nuevo México. Kit Carson settled in Taos.
Did anything happen while Kit Carson and the caravan were away on their journey?

Question: Which language did he use the most?
Self-contained rewrite: Which language did Kit Carson use the most?