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).

the  seven  days  battles  were  a series of seven battles over seven  days from june 25 to july 1, 1862, near richmond, virginia,  during  the american civil war. the  seven  days ended with mcclellan's army in relative safety next to the james river, having suffered almost 16,000 casualtiesduring  the retreat.

thing is, i'm afraid, you can't.

the most you can do is log out and never log in again.