The answer is "D. They transported goods across desert regions."
<span>The material assets of the North during the Civil War became more effective during the long run. Meaning, the assets were not immediately beneficial, but rather, paid off after time had passed. The assets included the beginning of new markets of selling products and for production of products and labor. There were different and new types of raw materials as well as a new frame of mind that added to the interest in democracy.</span>
The characteristic of a federal state is that governmental power is shared.
<h3>What the characteristics of federal states?</h3>
In a Federal state, the power of government is shared among the tiers of the government which includes state and local government.
The above means that each region would have control and power over to independently regulate themselves.
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The united states imports more goods than any other nation in the world