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Theodore Roosevelt became the 26th president of the United States after his predecessor was assassinated.
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Wilis carrier invented air conditioning.
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Wright brother invent the first test-flight air plane.
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Albert Einstein created the Theory of Relativity, E=mc^2.
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Guglielmo Marconi demonstrated the first wireless broadcast over radio.
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Oklahoma became the 46th state of the United States.
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Conflict between Creek Indians and the US. Ended in US victory. Part of American Indian Wars. Fought in Oklahoma.
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William Howard Taft became the 27th president of the United States.
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Conflict over border between US and Mexico. Part of the Mexican Revolution.
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Conflict between Cuba and US. Resulted in American occupation of Cuba. Part of the Banana Wars. Fought in Cuba.
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American occupation of Nicaragua during the Banana Wars.
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New Mexico became the 47th state of the United States.
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Arizona became the 48th state of the United States.
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Woodrow Wilson became the 28th president of the United States.
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Conflict between US and Ute and Paiute tribes. Part of the American Indian Wars. Ended in US victory. Fought in Utah and Colorado.
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US occupation of Veracruz. Part of Mexican Revolution.
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US occupation of Haiti during the Banana Wars.
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US occupation of Dominican Republic during the Banana Wars.
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European conflict involving multiple countries. Ended in US-Allied victory.
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US purchased the Virgin Islands from Denmark.
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Revolution and overthrowing of Russian government. Ended in Bolshevik victory.