Final answer:
The Spanish-American War had three causes: the explosion of the USS Maine, American expansionism, and yellow journalism.
Step-by-step explanation:
The Spanish-American War was caused by multiple factors. The first cause was the explosion of the USS Maine, an American warship, which led to public outcry and calls for war with Spain. The second cause was the desire for American expansionism, with the U.S. seeking to extend its influence and empire overseas. The final cause was the yellow journalism, which sensationalized news stories and influenced public opinion, pushing for war with Spain.
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