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A native southerner and friend of Andrew Jackson, Polk was elected president of the US in 1845. During his administration, the US made large territorial gains. Polk peacefully negotiated the Oregon border dispute with Britain, while the US victory in the Mexican War secured much of the West. Though an efficient and competent president, Polk was exhausted by the time he left office, and he died three months later. Despite his happy marriage, he had no children. What likely rendered him sterile? Discuss
Source: The Free Dictionary