How did the scientists discover that they resorted to cannibalism?

After examining the bones, Douglas Owsley, a physical anthropologist at the Smithsonian National Museum of Natural History in Washington, found that the girl's skeletal remains—including a skull, lower jaw and leg bone—all bear marks of an ax or cleaver and a knife

Explanation:

the indians crossed artificial boundaries, setting the stage for conflict

d) the lindbergh baby kidnapping

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