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.
The archaeologists discovered that over time there were fewer and fewer pinion and juniper trees. Then, the trees completely disappeared. Since pinion and juniper were used for firewood and food, that means that humans had to adapt to living in treeless scrub. When trees are cut down, the land is warmed more by the sun, creating dryer, hotter weather. The packrat nests also showed us that game was getting scarce and that people were eating rabbits and mice instead of deer.
The civil war was fought in the United States of America. It was fought between Northern side of the country and the southern side of the country. But in sides of the condition of Africa Americans and the people who belonged to the black community was the same
