What event happend after the qin dynasty collapsed

Supporters of using the atomic bomb at the end of world war ii believed that a japan might win the war if the bomb was not used. b americans were tired of war and the us should end it quickly. c russia was developing a bomb and the us needed to use it first. d japan was developing a bomb and the us needed to use it first.

What was a result of the use of farming machines

Which physical feature minimizes population density in northern africa?