In what ways did battle strategy for the Somme differ from history and precedent

The answer is

Explanation:

The battle strategy from the past did not have advanced weapons whereas battles the modern world have cannons, miniguns and nuclear weapons that pollute the world and cause misery to many. Another thing is that in olden battles people did not have too much first aids. But In the modern war they have enough first aid kits for the whole army.

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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.