Use the excerpt below to answer the question.
On May 14, 1955, the Soviet Union institutionalized its East European alliance system . . . when it met with representatives from Albania, Bulgaria, Czechoslovakia, Hungary, Poland, and Romania . . . to sign the multilateral Treaty of Friendship, Cooperation, and Mutual Assistance . “Country Studies,” Federal Research Division, Library of Congress
What was the purpose for assembling these representatives?
to create the Locarno Pact
to revise the North Atlantic Treaty Organization (NATO)
to support the Central Eastern Treaty Organization (CENTO)
to form the Warsaw Pact