Homo sapiens, the first modern humans, evolved from their early hominid predecessors between 200,000 and 300,000 years ago. They developed a capacity for language about 50,000 years ago. The first modern humans began moving outside of Africa starting about 70,000-100,000 years ago.
I believe the answer is urbanization, I'm not sure you should rely on my answer though.
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Congress is the only government body that can actually declare war. They only <span> hold the sole power to </span>declare war. <span>For the United States, </span>Article One, Section Eight<span> of the </span>Constitution<span> says "</span>Congress<span> shall have power to ... declare War". Hope this answers the question.</span>
