A good advancement would be a portable radio. They have made life easier for people who are walking/hiking and are looking for something such as the weather for the night or the score for a sports game.
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New food and fiber crops were introduced to Eurasia and Africa, improving diets and fomenting trade there.
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A doctrine which requires that all research materials that are used to be cited
Explanation:
Cause they can shjehejdnssk
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The answer is the second one (The slope of the tangent line is 5).
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