If your choices are the following:
A. The tactic created a stalemate between Great Britain and Germany on the western front.
B. The tactic's brutal total war techniques led the United States to declare war on Germany.
C. The tactic's reliance on speed and surprise led Germany to great success in the early years of the war.
D. The tactic shifted major German military battles from land conflicts to naval and aerial battles
Then I think thw answer is B.
They have made many products and continuously improve their products to fit the needs of the consumers
The controversial work of the National Recovery Administration.
Hope This Helps :)
It was Bolsheviks (I am not sure if I remember correctly but it should mean something like "majority" but I am not 100% sure).