What was the Hanoi Hilton? the North Vietnamese military headquarters the target of American air attacks during the Christmas bombing a prison built by the Vietminh to hold French soldiers captured at Dien Bien Phu the most notorious of the facilities in North Vietnam where American POWs were held

During the Vietnam War, the first U.S. prisoner to be sent to Hỏa Lò was Lieutenant Junior Grade Everett Alvarez Jr., who was shot down on August 5, 1964. ... The prison complex was sarcastically nicknamed the "Hanoi Hilton" by the American POWs, in reference to the well-known Hilton Hotel chain.

Explanation:

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity