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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<span>The United States becomes the first and only nation to use atomic weaponry during wartime when it drops anatomic bomb on the Japanese city of Hiroshima. Though the dropping of the atomic bomb on Japan marked the end of World War II, many historians argue that it also ignited the Cold War.</span>
Answer: The answer is True. The democratic party is mostly affiliated with liberal-based ideas while the republican party (GOP) mostly correlate with conservative ideas.
I believe the answer is: b. agriculture
In the 1920s, the national banks made it far too easy for people to obtain loan to buy lands that is used for agricultural purposes. This made the supply of the agricultural product to far surpassed the demand, which become one of the things that contribute to the economic crisis in 1920s.