War & Expansion: Crash Course US History #17
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War & Expansion: Crash Course US History #17
In which John Green teaches you about the Mexican-American War in the late 1840s and the expansion of the United States into the western end of North America. In this episode of Crash Course, US territory finally reaches from the Atlantic coast to the Pacific Ocean. After Oregon was secured from the UK and the southwest was ceded by Mexico ...
已浏览 365.3万 次2013年6月6日
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The eruption of Mount St. Helens on May 18, 1980, was one of the most significant volcanic events in U.S. history. A massive landslide triggered the eruption, followed by a powerful blast that devastated over 230 square miles of forest. The eruption released ash that spread across several states and caused 57 deaths. It reduced the volcano’s summit by about 1,300 feet, leaving a massive crater and reshaping the surrounding landscape. | History In Pictures
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The eruption of Mount St. Helens on May 18, 1980, was one of the most
History In Pictures
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