HELP PLEASE, Which best describes Franklin Roosevelt’s contribution to the Yalta Conference? He authorized the creation of new European nations. He played a critical role in planning for postwar Europe. He demanded that German leaders stand trial for war crimes. He recommended dividing Germany into zones of occupation.

B- He played a critical role in planning for postwar Europe.

Explanation: Yalta Conference, (February 4–11, 1945), major World War II conference of the three chief Allied leaders; Pres. Franklin D. Roosevelt of the US, Prime Minister Winston Churchill of the UK and Premier Joseph Stalin of the USSR which met at Yalta in Crimea to plan the final defeat and occupation of Nazi Germany.

a. because the u.s. was the leading with the most technology, economy, etc. also was teamed with other allies witch boosted the economy and materials to improve technology and use it.