Who was primarily responsible for cold war- the united states or the soviet union

Both, but The Soviet Union was primarily responsible for starting the Cold War. The Soviet Union is responsible because they wanted the fruits of war. The US was only trying to help people and not start a war, even though the Soviet Union didn't want a war, they needed it, there for they needed the war. According to document c it states " I do not believe that the Soviet Russia declares war. What they desire is the fruits of war the indefitne expansion of their power and doctrines "

b) brahmans   is nomadic society

seeing as no choices were provided, i'll do my best to answer it from knowledge.

job specialization promotes work ethic to the person doing the job. he/she may be strong in the arms and able to lift things, specializing him/her in a job where you lift and carry.