This is an incredibly easy question. The correct answer is Columbia.
Answer:
D. Limits were set about where slavery could spread in U.S. territories
Explanation:
In return to the limits of where slavery can spread, the US upheld that they will remain strict in catching and returning slaves, much to the displeasure of abolitionists in the North.
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It is Turkey because it considered more Asian than European
The capture of Iwo Jima and the firebombing of Tokyo. b.) The U.S. concession that he would remain in power and the fear of the atomic bomb.