<span>Social darwinism and laissez faire economics were most closely associated with the interests of big business owners. Big business owners had the most to gain from embracing such tactics. With social darwinism and laissez faire these business owners could prevent the government from trying to regulate them and they could take out rival companies and potentially monopolize whichever market they operated in.</span>
A)a new defensive tactic known as trench warfare
Trench warfare allowed the war to drag on for long periods of time because of the stalemates that ensue from the opposing armies refusing to give up the land under their controls, resulting in high casualties in no man's land.
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