<span>D. pyrimidines......</span>
The last one should be your answer
Answer:
d. Soviet Union dissolved, ending the Cold War
Explanation:
The head of the USSR at the moment Mikael Gorbachov decided that the time had come for a series of Reforms and major changes in the structures of the economic and political bodies.
By approaching the West he formalized the dissolution of the Soviet Union. The Russian and Americans began to seek cooperation in a series of topics that would pose a new agenda.
No longer could Cold war politics prevail.
Especially, the threat of terrorism that both sides suffered, made strong efforts into defining a new policy sometimes reflected in bilateral agreements.
With the collapse of the Soviet Union started in the late 1980 countries in the periphery of Russia began to approach US bilateral cooperation as well.
The resulting 15 independent states after 1991 meant also an effort to demilitarize the region. The case was most clear in Ukraine that gave up all the nuclear warheads to Russia.
Im pretty sure it might be A!
In 1922, the U.S.-driven Washington Naval Conference resulted in the Nine-Power Treaty reaffirming the Open Door principles. In reaction to the Mukden Incident of 1931 in Manchuria and the Second Sino-Japanese War between China and Japan in 1937, the United States intensified its support of the Open Door Policy.
