The manhattan project would impact the united states in which of the following ways

By   it's two towers falling or more danger.

Robert Oppenheimer was put in charge of putting the pieces together at 

Los Alamos. after the final bill was tallied, nearly $2 billion had been spent on research and development of the atomic bomb. the Manhattan project employed over 120,000 americans.  

Tbh i dont know the answeererrr im hust answering