In the decades immediately following the American Civil War, the United States policy of expansionism across the North American continent foreshadowed its imperial policies abroad at the start of the twentieth century. Select at least one of the justifications that American imperialists gave in support of imperialism and make an argument about how it shaped the policies of the United States first in the period of westward expansion and then again in the era of American Empire.
In the decades immediately following the American Civil War, the United States policy of expansionism across the North American continent foreshadowed its imperial policies abroad at the start of the twentieth century. Select at least one of the justifications that American imperialists gave in support of imperialism and make an argument about how it shaped the policies of the United States first in the period of westward expansion and then again in the era of American Empire.
With the onset of the 19th century, the United States began to expand westwards. It began with the Louisiana Purchase of 1803. As a result of the Louisiana Purchase, the US territory doubled. It was followed by the War of 1812 which helped it to secure Ohio and upper Mississippi. The Munroe Doctrine, the Mexican-American War, and the Gold Rush, followed by the Homestead Act during the Civil War helped further westward expansion.
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How and why do these justifications shape the policies?
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