Answer: Lemuel Shattuck.
Explanation:
Lemuel Shattuck was an American historian and politician, pioneered the use of state statistical systems, a population census process, and the development of vital records.
During his life, he performed various jobs, such as merchant, historian, and even bookseller, that generated a great interest in statistical records. He was the founder of the American Association of Statistics and promoted legislation to carry out population censuses and especially health censuses.
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The Mexican-American War, waged between the United States and Mexico from 1846 to 1848, helped to fulfill America's "manifest destiny" to expand its territory across the entire North American continent.
