I think the awnser is 4 as a war would happen if people wanted power
Why did historians choose to study this topic the correct answer is b
Answer:
I think it is image of egypt pyramid
Explanation:
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The brain. Modern homo sapiens such as humans have much larger brain than the early homo sapiens due to the fact that food at the time was becoming scarce so the need for the homo sapiens to become smarter was a necessity. And because of this early homisapiens brains evolved to become much larger than what they were before