Answer:
Puerto Rico became U.S. Territory in 1898, when it was acquired from Spain after the Spanish-American War.
Explanation:
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The new technology that allowed the Allies to more effectively bomb the Japanese main land, was the capacity of the B-29. If we look at the other ones, we see that all that stuff already exist before the war.
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The correct answer of the given question above would be the second option, option B, AGRICULTURALLY UNPRODUCTIVE LAND. What most likely caused the fifteenth-century decline of Great Zimbabwe is the agriculturally unproductive land. Hope this answer helps. Thanks for posting your question.
