The causes of the Peloponnesian war are that the Athenian Empire upset the balance of power in the Greek world this alarmed Sparta and its allies
It ended when the Athens surrendered after the war sparta was ruling the state of Greece
For china and russia Relations between the Soviet Union and China reach the breaking point as the two governments engage in an angry ideological debate about the future of communism. The United States, for its part, was delighted to see a wedge being driven between the two communist superpowers.
See I can't say what it is but I think its A