The end of the dynasty would be met with natural disasters such as floods, famines, peasant revolts and invasions. Nationalism in China emerged through historical experiences of greatness and humiliation.
*do not know if this is completely accurate*
China had become communist in 1949 and communists were in control of North Vietnam. The USA was afraid that communism would spread to South Vietnam and then the rest of Asia. It decided to send money, supplies and military advisers to help the South Vietnamese Government.
Did some research on the web it's D.the great rift valley
