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Puerto Rico became a U.S territory as a result of the Treaty of Paris, signed on December 10, 1898. According to the terms of the treaty to end the Spanish-American War, Spain ceded Puerto Rico to the U.S., along with the Philippines and Guam.
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he and all the other unemployed veterans wanted to demand the bonus that the congress had promised to give them as a retirement benefit.
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Center for Islamic learning in Africa
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naturalist Charles Darwin
English naturalist Charles Darwin developed the idea of natural selection after a five-year voyage to study plants, animals, and fossils in South America and on islands in the Pacific. In 1859, he brought the idea of natural selection to the attention of the world in his best-selling book, On the Origin of Species.