Why did they have to wait until the plane was in the air to arm the atomic bomb?

How were the okanogan highlands formed? a. by subduction, which caused huge folds in earths surface b. as a result of retreating glaciers carving great valleys into the earth c. when molten rock from under the earth approached the surface d. when the collision of volcanic island chains and ocean rocks formed new earth

Asupporter of the bolsheviks would most likely agree with which statement?

Which historical interpretation is supported by this source?