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The US purchased Alaska from Russia.
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The US negotiated a treaty with Hawaii and gained the right to exclusive use of Pearl Harbor.
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Alfred Thayer Mahan was the most important military strategist of the 19th century.
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This led to the importation of Hawaiian sugar being less profitable, which, in turn, created a desire to annex Hawaii.
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The US wanted Hawaii for business purposes.
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Dewey took over the Philippines during the Spanish-American War.
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The Maine explosion was one of the chief causes of the Spanish-American War.
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This was a proclamation that the US would leave Cuba and not conquer it once they defeated the Spanish.
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McKinley did not favor a war, but eventually proposed declaring war to congress.
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This was a group of prominent American citizens that were strongly against imperialism. It was founded after the US took over the Philippines following the Spanish-American War.
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The "Rough Riders' gained popularity during this battle for their famous charge up San Juan Hill.
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This ended the war with an American victory.
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This was the first invasion during the Spanish-American War.
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This was policy proposed by John Hay, which allowed for free trade within China.
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President McKinley created this commission for the purpose of governing the Philippines.
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The citizens of the Philippines were outraged that they did not receive their freedom following the Spanish-American war. This caused them to rise up against the US.
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The Boxer Rebellion was a response to the potential "carving up" of China by European powers.
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This treaty with Britain allowed for the US to build a canal across South America.
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This treaty allowed the US to build the Panama Canal. Roosevelt used big stick policy in order to make this happen.
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This was an extension of the Monroe Doctrine that effectively kept European countries away from Latin America.
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The City of San Francisco attempted to put Japanese, Chinese, and other Eastern Asian students into separate schools. This was eventually prevented.
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Mexico had a long-lasting revolution during which, the leadership changed often.
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President Taft attempted to institute "dollar diplomacy," which was the practice of investing overseas.
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The creation of the Panama canal took many years of political battles, and then many more years of actual construction.
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A group of American sailors were unintentionally captured by Mexican armed forces, and Wilson ordered the Navy to seize the port of Vera Cruz.
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The Lusitania was sunk by a German submarine. Although it was a British ship, 128 Americans were on it when it went down.
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The Zimmerman Note was an uncovered message between Germany and Mexico that proposed an alliance between them against the US.
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This was meant to prevent internal support of American enemies by regulating the freedom of speech.
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Following the discovering of the Zimmerman notes, as well as the Bolshevik Revolution, President Wilson asked Congress to declare war on Germany.
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This extended the Espionage Act by making it stricter, with more prohibited sentiments.
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This association was created to stifle labor disputes in order to prevent them from hurting the war effort.
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President Wilson said in his Fourteen Points Address that WWI had a moral cause of ending all wars, and furthering democracy.
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The Red Scare took place following the establishment of the Soviet Union as a communist country.