All of the following were discussed at the potsdam conference except which one?
a. how to rebuild a devastated france
b. the fact that the u. s. had an atomic bomb
c. how to divide up germany between the allies
d. the soviet union's need to dominate eastern europe after the war

The correct answer is b. the fact that the u.s. had an atomic bomb

At that point in time, it was still unknown that the US had an atomic bomb. The us announced it's surrender ultimatum to Japan sometime towards the end of the conference claiming they have a great weapon of destruction, but anything about it was unknown.