Regional differences made governing difficult.
Answer:
permanent alliances and excessive debt
Explanation:
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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Answer:
The automobile has been a key force for change in twentieth-century America. During the 1920s the industry became the backbone of a new consumer goods-oriented society. By the mid-1920s it ranked first in value of product, and in 1982 it provided one out of every six jobs in the United States.
Explanation:
