<span>The best answer for this question would definitely be: The ability of Western European countries to integrate their economies. The economy of Western European countries had been most flexible throughout the years. They have formidable systems that give balance of the percentage of finance.</span>
Explanation:
The ancestors of living Native Americans arrived in what is now the United States at least 15,000 years ago, possibly much earlier, from Asia via Beringia. A vast variety of peoples, societies and cultures subsequently developed.
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