<span>by helping the United States to continental greatness and enriching French treasury in the process, Napoleon created a world power that was strong enough to challenge Britain.</span>
The correct answer is b. Truman doctrine
The Truman Doctrine was an American foreign policy approach that was aimed at countering the influence of communism and Soviet geopolitical expansion by supporting pro-democratic countries against Soviet aggression. Countries such as Turkey and Greece were targeted
Never before in human history had so many of the world's plants, animals, and microorganisms been so thoroughly and so abruptly mixed and dispersed. We call this phenomenon the Columbian Exchange. Determined to farm the American land in a European manner, the colonists introduced their livestock: pigs, horses, mules, sheep, and cattle.
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