What did archeologists learn from studying the graves and shelters at Chaco Canyon?

By examining graves at Chaco Canyon, archaeologists found evidence of warfare, cannibalism and scalping. There was also evidence that shelters were built in protected places, possibly to defend themselves against enemies.

Explanation:

the answer to your question is a. the salt plains

in 1811, he led an expedition, known as the george c. sibley expedition, to improve relations with the pawnee and kansa tribes, and also to locate the rumored jefferson's salt mountain

what are the choices btw if it was me id say the lack of money to continue with education