The best answer is B.
The Warsaw pact is the name commonly given to the treaty between Albania, Bulgaria, Czechoslovakia, East Germany, Hungary, Poland, Romania and the Soviet Union which was signed in Poland in 1955 and was officially called The Treaty of friendship, Co-operation and Mutual Assistance. It was called the Warsaw pact because it was signed in Warsaw.
It was a response to the formation (by western allies) of the North Atlantic Treaty Organization (NATO). West Germany was allowed to join NATO and was allowed to re- militarize and thus the Soviets saw this as a potential threat.
According to the graph, and if the trend continues, in 2030, D. more than 80% will be living in urban settings.
The best item is letter B: to protect against future economic crises.
Dear Diary,
How I wish I could do more than sign letters all day. Being a king is such a merry sorrow why I rather be knight instead. But at last I shall not therefore this crown has been passed down from my father and I must continue the family legacy. Until tomorrow diary. ~King
