"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.
They were glad for the additional settlements between themselves and Spanish Florida as some viewed as a potential threat.
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Kansas, situated on the American Great Plains, became the 34th state on January 29, 1861. ... This quickly led to violence,and the territory became known as “Bleeding Kansas.” Kansas has long been known as part of America's agricultural heartland, and is home to the major U.S. military installation Fort Leavenworth.
Your correct answer would be nativism as that is the political policy that people native to a country are more important than those who are moving here from another country.
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It would be "Polynesia" that was a region of Oceania greatly affected by European colonization, forced slavery, and deadly diseases, since this territory was highly advantageous for countries looking to increase production and expand their empires.