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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they wanted the u.s. to fight on the side of the central powers.