What is the Cuban Missile Crisis

a conflict between the U.S. and Soviet Union resulting from the Soviet installation of nuclear missles in Cuba in 1962

Explanation:

c. bounced back and forth from worthless to worth a lot and back to worthless

(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