Answer:
As the slab gets to a certain depth, it gets hot enough that it start to melt again. As it melts, it undergoes differentiation and also gets less dense. Low density means that it will start to rise back up again, usually, as granitic magma.
Explanation:
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That would be in an o<span>ligarchy. </span>
The answer from the above choices is B.) Soviets
the answer is that the south had little resources and the North had the lot