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Which American chemist developed the technique of carbon-14 (or radiocarbon) dating that proved to be an extremely valuable tool for archaeologists, anthropologists, and Earth scientists?

Which American chemist developed the technique of carbon-14 (or radiocarbon) dating that proved to be an extremely valuable tool for archaeologists, anthropologists, and Earth scientists? Correct Answer Willard Frank Libby

American chemist Willard Frank Libby developed the technique of carbon-14 (or radiocarbon) dating, which proved to be an extremely valuable tool for archaeologists, anthropologists, and Earth scientists.

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Consider the given statement and decide which of the given assumptions is (are) implicit in the statement. Statement: Archaeologists locate potential sites where ancient civilizations may have lived or where historic events may have occurred. Assumptions: I: The archaeologists are mostly found in India. II: The archaeologists help historians.
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Proposition of the Law of Evidence is that
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2. Acts of the Central Government may be proved by the records of the department, certified by heads of the departments.
3. Acts of the state may be proved by the document purporting to be printed by the order of such Government.
4. Acts of the State Government may be proved by records of the department certified by the head of the corresponding department of the Central Government.
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