Henry Kissinger was the American who negotiated the cease-fire with North Vietnam, essentially ending the United States involvement in the conflict between the North and South Vietnam. The correct option among all the options given in the question is option "c". He was also the United States Secretary of State during the time in which Richard Nixon and Gerald Ford were the presidents.
Ancient societies like the Mayans had a social structure similar to Egypt's pyramid structure. Hope this helps :)
<span>The Phoenician alphabet, called by convention the Proto-Canaanite alphabet for inscriptions ... Phoenician inscriptions have been found in archaeological sites at a number of former Phoenician cities and ... to the Phoenician ones and vowels were added, because the Phoenician alphabet did not contain any vowels.</span><span>
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Genghis Khan was ruthless and gruesome. His strategy was to scare people into submission. When they were scared, they would surrender easily and it would save Khan's army much money, time and resources. however, in order to do so, Genghis would ruthlessly slaughter men, women, and children to prove his point.