In 1945, fifty nations met and signed a charter creating the a. cold war. c. yalta agreement. b. united nations. d. league of united nations.

b. United Nations.

Explanation:

The United Nations was initially planned and designed during the Dumbarton Oaks Conference by the United States, the United Kingdom, the Soviet Union and China. Afterwards, on April 25, 1945, fifty nations gathered in San Francisco to draft and sign the UN Charter. The UN officially came into existence on October 24, 1945 when the Charter was ratified by the five permanent members of the Security Council (France, the Republic of China, the Soviet Union, the UK and the US).

what are two things that greatly the american economy after the war? the huge buildup of u.s. military the beginning of the korean conflict the creation of the gi bill the marshall plan for nations