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Here ya go hope it answers all questions
About 200,000 years ago, we evolved to become the most important force for change on the planet. Our knack for collective learning — preserving information, sharing it with one another, and passing it to the next generation — helps us create entirely new forms of complexity.
The conflict between Sumerians<span> and Elamites probably extended back to Neolithic ... The almost constant occurrence of war </span>among<span> the </span>city-states<span> of </span>Sumer<span> for two .... a situation that </span>led<span> to a relatively even development of weapons technology .</span>
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Roman styles and ideas are evident throughout the world today. Roman building methods and ideas are seen in many modern buildings. Roman artistic ideas (both visual and literary) are still valued and studied today. Concepts from Roman government have been picked up in our current system. The Roman language influences our language and is used in the fields of science and law.
Explanation:
18 slave ships per year were sailed.
