The end of dynastic rule in china was ultimately due to
a. greed.
b. opium.
c. imperialism.
d. isolationism.

c. imperialism.

hope this helps

b, the anti immigrant fervor

the triple alliance. germany and austria-hungary were already allies by 1879 when, worried about a threat from russia, they formed the dual alliance. italy joined the group in 1882. there was a concern about a possible attack from france and the alliance needed powerful friends to defend it.