Answer:
D Is the answer its a very honest strategy.
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The answer is racism. It is racism because they treated the Europeans from the north more better than Europeans from the south for no reason when they were essentially the same
Answer: Gilded age, American expansionism, progressive's era, world war 1, foundations of America.
The answer would be C, different economics, because the northern states were going through an economic boom, due to industrialization. The southern states were running on slave labor.