Verified Answer :

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He was Secretary of State to Gerard Ford and Richard
Nixon.  He was known for being involved
in numerous events in American History.
Among these were the establishment of Relations with China, the closing of
the war in Vietnam and the détente policy with Russia.  He was said to be one of the most effective
Secretary of State in U.S. history.

Answer:

Henry Kissinger. Henry Kissinger served as National Security Advisor and Secretary of State to President Gerald R. Ford. He also served in both positions for President Richard Nixon.

Explanation: