<span>Found mainly in the Gulf of Mexico, it would be "A. oil" that is Mexico's most important natural resource, since this usually brings the largest amount of revenue. </span>
Explanation:
The Cold War was a period of geopolitical tension between the Soviet Union and the United States and their respective allies, the Eastern Bloc and the Western Bloc, after World War II. The period is generally considered to span the 1947 Truman Doctrine to the 1991 dissolution of the Soviet Union.
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Answer:
B. <u>Is useful for showing changes over a period of time.</u>
In the 1890's, the main goal of those who supported United States imperialism was creating a market for trades and obtaining naval bases. During the period of the 1990's, the United States became a great industrial power. They needed to sell the goods manufactured in their factories. For this purpose they needed to find new market.