"Planting trees throughout Sahel" is the one action among the following actions given in the question that would be the most effective long-term solution to fighting desertification in the Sahel.
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George Washington was the first president of the United States of America.
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Answer:
Spain became the greatest naval power
European countries competed with one another over new lands.
New goods found in Europe expanded trade because of the power of European countries.
and apparently "f"
Explanation: