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Andrew Johnson (1808-1875), the 17th U.S. president, assumed office after the assassination of Abraham Lincoln (1809-1865). Johnson, who served from 1865 to 1869, was the first American president to be impeached. A tailor before he entered politics, Johnson grew up poor and lacked a formal education. He served in the Tennessee legislature and U.S. Congress, and was governor of Tennessee.
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Modernizing Russia long European lines
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I'm pretty sure it's right
Mexico had made the biggest impact on Texas because of the Spanish law.
Walter Reed's research in yellow fever determined that yellow fever is transmitted by certain mosquitoes. This research was the forerunner of epidemiological research. Walter Reed was known for his strong values and compassion. Those traits were applied to humanitarianism activities in medical care.